Ninja Hattori-kun
What a Space Exhibition! (2x62)
:
Kenichi and his friends came to the Space Expo, but because there were so many people everywhere, they decided to eat lunch for the time being. Kenichi who has hidden the hamburger for Shinzo, behaves so as not to be exposed, but at the weightlessness experiment corner he visited after that, the hidden hamburger accidentally pops out.