Usually asked by a junkie who needs 2 bucks to get him, or herself a shot of dope from someone at a homeless camp.
"You got 2 bucks!?"
You give them suck to get a buck
If we play fortnite, I will give you a suck for buck.
Not doing what your told to do.
Man I've told you to do that but your bucking.
To have sex with a friend or relative and to make sure you nut on their butt
“ I caught Witad and Waniel bucking on Christmas Eve. Sick friends.”
The act of letting another man ejaculate on your penis, and then fucking your wife but not cumming, so you’re just delivering the semen from the other man to your wife. A combination of breeding and cuckoldry.