Top definition
When after sex during a girl's period (in missionary, boy on top position), you pull out, look down, and under her vagina are two round, bloody, ball marks.
After banging my girlfriend while she had her visit with Aunt Flo, I looked down and saw the impact craters my balls left behind.
by SIMJ September 01, 2005
Get the mug
Get a impact craters mug for your friend Yasemin.