Hogwarts Lightning

A sexual practice in which one person ejaculates on someone's forehead trying to form the same lightning shape Voldemort did on Harry.

- So how did you finish?
- I tried to do the Hogwarts Lightning, but I ended up drawing an Edward Scissorhands all over her face

Serve ball check

When, before participating in a threesome, you have to discard a few people so it doesn't turn into an orgy. You have a quick look at them and select the fittest.

- So, did you fuck all of them?
- Nah, I serve ball checked them quick and tossed the ones who were still unnaked