Saturday the 14th

The day that you have a hangover from killing camp-going teens while wearing a hockey mask the night before.

Guy 1: ...Ugh... I have a massive hangover from something...

Guy 2: Yes. It is Saturday the 14th. You have been killing random people with a fireaxe and a hockey mask.

Guy 1: That makes sense.

Guy 2: *Throwing up blood and gore.*

Guy 1: So this is how Saturday the 14th happened.