fess up

to admit the truth, confess

Come on fess up. I know you aren't really that sick.

fess up

to confess

"Fess up or we'll all be caught"

fess up

to insult or violate someone

P1 - Shut the fuck up nigga, I'll dead fess you up
P2 - This nigga swear he fess up people

fess up

Also used as "fess it up"
1) To give or relinquish.
2) A request for booger.

1.
Person A: I'm goin' to the store - you want something?
Person B: Yeah, get me a dope and a moon pie.
Person A: Fess up some $, biatch!

2.
C'mon baby fess up some of that booger!

3.
Dude, did you get her to fess it up last night?

fessing up

admitting something.

Kudos to the teen for fessing up the whole story.

Fessed up

To diss; to insult.

Jane (to John): you're dumb stupid.

Joe: ohhhhh, you just got fessed up.

fess me up

Talking disrespectful to another individual which can cause confrontation .

Don't try and "Fess Me Up"