Top Definition
A small, hairy penis, usually a chode.
Woah he has a Siebert, Fail.
by Doctajsnap April 24, 2010
(v.) synonym for exaculate; to release sperm
"I'M SIEBERTING!", he screamed trying to pull out.
by Anonymous2414 November 05, 2014
Another word for uncircumcised. The extra skin on a males penis. It's also known as a Skorup or a Gremp.
"That guy Brian Wheeler showed me his penis. It still has Siebert on it." "Oh boy, Sometimes I wish my parents had me circumcised. I can't stand having a Siebert penis."
by MCHamBusta August 04, 2012

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