360 UG

360 Your Grandma (Can be changed to any other member of family, or animal).

Stating that the person speaking has had sex with the person's (insert family member or animal here) they are talking to.

Guy 1: 360 US!
Guy 2: 360 UM!
Guy 1: 360 UG!
Guy 2: You sick bastard! My Granmother is dead