rack sack

The act of ejaculating onto a female's breasts.

Dustin: So dude did you try that new thing with her tits? A rack sack?

Mitch: Oh I totally rack sacked her.

granny dipping

1. Having sexual intercourse with an extremely old woman.

2. Nasty dirty old person sex.

Mitch: Omg dude. That chick you had sex with is like 53!

Derrick: Is that wrong.

Mitch: Yes... Granny dipping is wrong...

blubber bumper

1. A person who commits a sexual act with an overweight person.

2. A fat loving sicko

Dustin: Oh look at her! I'd tap that.

Mitch: Dude that chick is huge! You're such a blubber bumper!