Definitions by HeyThereFracaso

buck some knucks 

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."

buck some knucks by HeyThereFracaso August 14, 2009