A dark setting where males look for females on a similar level of intoxication as them. There is often music playing. Upon entering the abyss one might start to grind with a random girl and then proceed to hook up with her. Ideally no names or words would be exchanged. It is very easy to get with many girls of low quality in one night. Due to the darkness and drunken state it is hard to judge the attractiveness of the females which can lead to mistakes. The abyss defines the saying quantity over quality.
P.S. Watch out for monsters.
Dude 1: I saw you in the abyss last night at the frat party hooking up with a random girl.
Dude 2: I know she was so hot right.
Dude 1: Out of ten she was at best a 3, did you get her name?
Dude 2: Naw dude its the abyss that's not allowed.