Good idea / bad idea

By Niche Eenhoorn (Inspired on the Animaniacs (c) Warner Bros)

Good idea: Curse someone to spit slimy slugs

Bad idea: Curse someone to spit flesh-eating slugs

(sent in by Ravyn)

Good idea: Writing your Potions punishment essay with your own quill.

Bad idea: Writing your Potions punishment essay with Professor Umbridge's quill.

Good idea: Write a love letter to Cho Chang

Bad idea: Write a love letter to Argus Filch

Good idea: Invite Hermione out for a drink.

Bad idea: Invite Winky the House Elf for a drink

Good idea: Feed a mouse to your pet owl.

Bad idea: Feed Wormtail in his rat form to your pet owl.