Top definition
When you put one of your knuckles on a pussy and virgourously rub until the pussy and knuckle become raw.
Bro I can't believe Samantha took that knuckle burn so well, I still have 3rd degree burns on my knuckles.
by Penisgrasper69 August 04, 2017
Get the mug
Get a knuckle burn mug for your papa Callisto.