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1.
The act of cumming on your partner's chest during sex. Action normally takes place during that perfect moment when a woman presents her chest to be cummed on.
"I'm going to Geiman all over your tits tonight, babe"
by axmac10 December 28, 2011
 
2.
Boundless.
That dude's a Geiman
by mathurin30002 April 07, 2011