ante up

originally used in games of risk such as poker meaning to increase the risk or raise the stakes of the game. More commonly used now as a challenge to person, replaceable with "step up"

"if you got game, ante up motherfucker"

firm up

get an erection; acquire an erect penis

Horny slut to drunken bum: FIRM UP, DARLING

Blowin Up

When your phone is ringing off the hook, someone is blowin you up.

"I'm blowin up!"
"I'm so popular, I've been blowin up all night."

Set up

To kill somebody or to arrange the murder of somebody.

Do you know who set up Vancouver Kingpin Sandip Duhre? Ya Robby Alkhalil did it, he got convicted for it.

horned up

State of sexual excitement or arousal

I was so horned up last night I'd have shagged anything

keep it up

If said in a cheerful, praising tone, it means "You're doing great, continue the good work!"

If said in a warning tone, it is a threat that means "Stop it right now, or reap the consequences!"

Praise: Wow, you've lost 35 pounds on that diet! Keep it up!

Warning: I have had all I can take of your whining! Do you want a spanking? Keep it up...!

Lit Up

US Army slang meaning attacked. Initially referring to artillery attacks at night when illuminating rounds were fired to expose the target before destroying it with HE (High Explosive), Fragmentation or WP (White Phosphorous). Eventually the phrase was used to describe any intense attack on enemy positions or personnel whether it was with artillery, air strike or small arms.

We caught one of Charlie's supply columns out in the open and called in an artillery strike!
What happened?
Man you should have seen it, they got lit up real good!
Number One!