A joke shop located in Diagon Alley where all you're pranking dreams come true. Owned by Fred (RIP) and George Weasley. Home to anything fun in the wizarding world. Well known for insulting Voldemort with the You-Know-Poo sign.
Argus Filch's worst nightmare...
Dude, let's go to Weasley's Wizard Wheezes!
Yea I need to restock my joke supplies! Filch took it all.