Top definition
to fist fight. knucks are defined as knuckles, and bucking is the act of punching.
"We're gonna buck some knucks if you don't stop talking smack."

"Me, you, outside by the cafeteria after lunch; we're gonna buck some knucks."
by HeyThereFracaso August 14, 2009
Get the mug
Get a buck some knucks mug for your cat Vivek.