War tactic that takes place at work, office usually, when a colleague comes up to another and stamps him/her with office stamp, such as DRAFT, VOID, COPY, etc., on a random body part (wrist, leg, face?) and casually walks away
by office stamping December 26, 2011

by Tha Dunk June 1, 2012

Coating your testicles with ink, so that after you teabag someone, it leaves a marking of your balls. An extreme tea bag
Yesterday, when Brittaney was sleeping, i took some ink to my balls, and junk stamped her. She was quite displeased in the morning...
by Resilient Tapout September 19, 2009

When you're doing anal with a girl and get done only to see that there is a brown liquid like substance on your dick which you then slap savagely across her forehead
I was porking Monica in her dump hole then I pulled out and sludge stamped her across her cock holster.
by Sludge Mushroom April 5, 2015

Talking your post coital, cum or shit covered penis bellend and pressing/stamping it agains her cheeks, forehead or buttocks.
I gave several bell stamps on Rachel’s butt cheeks after anal sex. Love them brown polka dots.
I left a nice little round cum crusty on Rachel’s forehead after sex with the old bell stamp.
I left a nice little round cum crusty on Rachel’s forehead after sex with the old bell stamp.
by Eaton Holgoode June 4, 2018

by Ncsuengin9 June 1, 2019

Elly: "I walked in on your parents doing it in the Jacuzzi!"
Devon: " Oh thats a nasty brain stamp!"
Devon: " Oh thats a nasty brain stamp!"
by Assilem January 5, 2009
