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Season 2015
This week, John looks at 30 behind the scenes stories from Hollywood blockbusters.
This week, John looks at 30 behind the scenes stories from Hollywood blockbusters.
This week, John looks at 26 facts about the founding fathers of the United States.
This week, John looks at 26 facts about the founding fathers of the United States.
This week, Mike looks at some (very) weird apps for your phone.
This week, Mike looks at some (very) weird apps for your phone.
2015x4
17 Crazy Hair Myths (incl. Can a MARCHING BAND cause HAIR LOSS?!)
Episode overview
This week, Craig looks at 17 common myths about hair.
This week, Craig looks at 17 common myths about hair.
This week, John tests a third round of 30 "life hacks" to see if they work as promised.
This week, John tests a third round of 30 "life hacks" to see if they work as promised.
This week, Paige looks at 23 weird awards you can win!
This week, Paige looks at 23 weird awards you can win!
This week, John looks at words invented by authors.
This week, John looks at words invented by authors.
This week, John looks at words invented by authors.
This week, John looks at words invented by authors.
This week, Mike looks at some (very) weird apps for your phone.
This week, Mike looks at some (very) weird apps for your phone.
This week, Paige looks at 23 less than stellar business moves.
This week, Paige looks at 23 less than stellar business moves.
This week, John looks at awesome, astounding, and amazing animals!
This week, John looks at awesome, astounding, and amazing animals!
2015x12
16 Shampoo Facts (Incl. Why There's Silicone In Your Shampoo!)
Episode overview
This week, Craig looks at 16 incredible facts about shampoo!
This week, Craig looks at 16 incredible facts about shampoo!
This week, John looks at some of the ways technology has improved our lives.
This week, John looks at some of the ways technology has improved our lives.
This week, John looks at some delicious facts about chocolate.
This week, John looks at some delicious facts about chocolate.
This week, the episode you've all been waiting for, John looks at some amazing facts about pigs!
This week, the episode you've all been waiting for, John looks at some amazing facts about pigs!
This week, Mike takes a look at some of your favorite fandoms!
This week, Mike takes a look at some of your favorite fandoms!
This week, John looks at 20 facts about Abraham Lincoln.
This week, John looks at 20 facts about Abraham Lincoln.
We do a lot of research around here for mental_floss episodes, and often come across facts that don't fit in to any specific episodes but are too good to keep to ourselves. This week, John rifles through 101 amazing facts.
We do a lot of research around here for mental_floss episodes, and often come across facts that don't fit in to any specific episodes but are too good to keep to ourselves. This week, John rifles through 101 amazing facts.
This week, John looks at 25 towns that made some interesting naming choices.
This week, John looks at 25 towns that made some interesting naming choices.
This week, Elliott talks all things Muppets with Kermit and Miss Piggy (with appearances by Statler, Waldorf, and Animal).
This week, Elliott talks all things Muppets with Kermit and Miss Piggy (with appearances by Statler, Waldorf, and Animal).
This week, Paige looks at 30 rather strange scholarship opportunities.
This week, Paige looks at 30 rather strange scholarship opportunities.
This week, John looks at 23 weird celebrity businesses, aka, all the fun ways celebrities can lose money!
This week, John looks at 23 weird celebrity businesses, aka, all the fun ways celebrities can lose money!
This week, John looks 24 strange scientific studies!
This week, John looks 24 strange scientific studies!
This week, John looks 24 foods that probably didn't originate where you think they did!
This week, John looks 24 foods that probably didn't originate where you think they did!
This week, Aaron shares some facts about truly horrifying parasites! Sleep tight...
This week, Aaron shares some facts about truly horrifying parasites! Sleep tight...
This week, John looks at (and tries to break a few) weird world records!
This week, John looks at (and tries to break a few) weird world records!
This week, John looks at some unexpected things you'll find aboard cruise ships!
This week, John looks at some unexpected things you'll find aboard cruise ships!
As some of you might know, John is hardly a one-take-wonder. So, enjoy some of our favorite goofs from the past few months of shooting!
As some of you might know, John is hardly a one-take-wonder. So, enjoy some of our favorite goofs from the past few months of shooting!
This week, John shares 27 facts about maps.
This week, John shares 27 facts about maps.
This week, John looks at 25 lost cities.
This week, John looks at 25 lost cities.
This week, John looks at 25 things you probably didn't know about dreams.
This week, John looks at 25 things you probably didn't know about dreams.
This week, Craig looks at historic heists!
This week, Craig looks at historic heists!
This week, John looks at some bizarre conspiracy theories that people actually believe!
This week, John looks at some bizarre conspiracy theories that people actually believe!
This week, Mike Rugnetta takes a look at some inventions that just weren't meant to be.
This week, Mike Rugnetta takes a look at some inventions that just weren't meant to be.
This week, John looks at some facts about ordinary household items!
This week, John looks at some facts about ordinary household items!
This week, Craig looks at some unusual political parties from around the world.
This week, Craig looks at some unusual political parties from around the world.
This episode has no summary.
This episode has no summary.
This week, Erin McCarthy (Executive Editor of MentalFloss.com) shares some interesting facts about musicals!
This week, Erin McCarthy (Executive Editor of MentalFloss.com) shares some interesting facts about musicals!
This week, John tells you a few things you probably didn't know about inventors.
This week, John tells you a few things you probably didn't know about inventors.
This week, Adriene Hill shares some fun facts about money!
This week, Adriene Hill shares some fun facts about money!
This week, John shares some truly ridiculous lawsuits.
This week, John shares some truly ridiculous lawsuits.
This week, Craig shares some great facts about brains!
This week, Craig shares some great facts about brains!
This week, John shares some fascinating sports facts!
This week, John shares some fascinating sports facts!
This week, Craig takes a look at some classic horror films!
This week, Craig takes a look at some classic horror films!
This week, John tells you some things you probably didn't know about Barbie!
This week, John tells you some things you probably didn't know about Barbie!
This week, Craig tells you all about wine!
This week, Craig tells you all about wine!
This week, John shares some little known facts about Jim Henson!
This week, John shares some little known facts about Jim Henson!
This week, John shares some little known facts about popular cities!
This week, John shares some little known facts about popular cities!
This week, Adriene shares some little known facts about fruit!
This week, Adriene shares some little known facts about fruit!
This week, John shares some little known facts about the science of music!
This week, John shares some little known facts about the science of music!
This week, John shares some little known facts about his favorite romantic comedies!
This week, John shares some little known facts about his favorite romantic comedies!
This week, John shares some little known facts about his favorite holiday films!
This week, John shares some little known facts about his favorite holiday films!
2015x52
Season finale
21 Things That Turned 21 This Year (2015 edition)
Episode overview
This week, John shares 21 things that turned 21 in 2015!
This week, John shares 21 things that turned 21 in 2015!
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