5. Two words.
You know that girl you’ve got a crush on? Just find a single hair and some polyjuice potion and voila! Have a prostitute drink some polyjuice for an hour of fun with anyone. And you know there is a black market for that shit. Lockhart probably sells a few clippings a day for a thousand galleons a pop
6. Avada Kedavra = Abra Kadabra
The only spell that exists for the one purpose of killing, is also the spell that’s deeply ingrained in Muggle culture. Which means that the Killing Curse was used enough around Muggles that its butchered pronunciation is used as a general “magic” sounding phrase.
7. The sheer number of times poor Peter Pettigrew had to watch young Ron wank…
8. Psycho wizard makes two portkeys, one out of a rock he chucks ino the ocean 5 miles out, and one out of a plastic ball he chucks into a ball pit at McDonalds or Chuck E. Cheese.