Dennis the Menace and Gnasher (2009)

All-in Menacing (1x22)

Air date: Oct 02, 2009

After a wrestling accident, Gnasher swallows a canister of laughing gas at the vet's. Dennis, along with Gnasher hide in the conference centre, where dad gives a speech. However, the canister leaks, causing Gnasher to fart laughing gas and having everyone laughing.