1 Shortly after having vigorous sex, returning and beating it up again.
2 Shortly after kicking someone's ass, returning to whoop them again.
1 "Man, that girl last night was so good, I had to rebeat that shit like six times!"
2 "Even after I layed him out, that guy was still talkin' trash, so I had to go rebeat his ass. This time I really balled him up so he would keep his mouth shut!"
This refers to when you beat up someone that you had already beat up recently.
I knocked that asshole the fuck out and then i shouted at his unconscious cunt to apologize!..but he did not answer so i had to rebeat his stupid ass!!