Groin Crackin'

the act of the male and female sex organs connecting in a violent, raging, yet very enjoyable intercourse.

example: I was sexiled from my room because my roommate and her boy toy are groin crackin' in the back.

synonym for smoosh.
Like yeah me and my boy/girl we smooshed last night.
Like yeah me and my boy/girl we were groin crackin' last night.