Cum Stamp 

The act of cumming on a girls lower back where the "tramp stamp" is. This will render said "tramp stamp" illegible.

yo dude i totally railed that bitch from behind last night and turned her tramp stamp into a cum stamp

Cum Stamp by suppper 17 July 18, 2010

Cum-Stamp 

When a person gets cummed on and then presses their body onto a sheet, person, pillow, etc. leaving a perfect stamp.

"My boyfriend came on my stomach again last night, so I totally cum-stamped his pillow"
OR
"Yo man, sorry about the cum-stamp on the shirt you lent me. You know how girls like to cuddle."

Cum-Stamp by mcguide October 13, 2011

cumstamp

When you cum on a girls ass and she rolls over on your bedsheets.

That girl I took home from the bar left a cumstamp on my momma spread.

cumstamp by The Sandiest Man April 20, 2020