The act of ejaculating on a food item (typically a burrito) and throwing it at your friends car.
After a night of partying, someone gave Greg a Dirty Bullocks
Sexual activities involving shit mustaches, shotguns penetrating anally and nazi paraphenalia.
For her part, Bullock denied the existence of a sex tape. What she has not yet addressed are Halperin's allegations that she received a Dirty Bullock from James
The Dirty Bullock is somewhat similar in nature to a Dirty Sanchez. It differs only in that the female participant is a reasonably hot movie star and the male participant is a complete and total twat.
So . . . I hear Jesse gave Sandra the ol' Dirty Bullock the other night.