When a man sticks a condom over his head, and into a woman's vagina when on her period and then pulls it out and blows, inflating the condom, now covered with blood.
"Damn, that girl's pussy was so loose and I could easily do a bloodyastronaught with her."
A drinking game: On the show Acient Aliens, you drink every time the narrator says "ancient astronaut theorists". If the "ancient astronaut theorist" is from DeVry University, you drink twice.