1. Literally, sleeping with them
2. Messing with them, as in playing atrick on them.
1. Dupe was fucking with someone and he caught something.
2.Fucking with someone doesn't lead to no good if they in a bad mood.
Getting revenge. Paying someone back for what they did to you.
I ain't forget about Vonda's li'l ass! I'm gettin some get back for what she did to my nails!