Top Definition
when you stroke your penis up and down it makes an umm - stiss sound
he was beating his penis in the bathroom and you could hear an umm stiss sound from the next room
by Anonymous March 30, 2003
What's this?
"Fred drunkenly pulled down the transsexual's skirt, mumbling, 'umm stiss?'"
by Professor Plum July 08, 2003
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.