by Jimmy Paladino August 23, 2005

mike: oh my justin! did you hear, josh and jessie got to 9th base last week!
tim:holy shit, that's why she hasn't been at work all week!
tim:holy shit, that's why she hasn't been at work all week!
by ilove9thbase August 23, 2010

by sambodo October 09, 2008

Anal sex with someone from behind whilst you place your hands around their throat and strangle them.
Jacob : Hey man, Im so going to 9th base with you tonight is that cool?
Dan Mcgree : Hell yes its cool, I want it badly I hope your ok with it though..
Dan Mcgree : Hell yes its cool, I want it badly I hope your ok with it though..
by Jacob6969Amsterdam May 07, 2007

by luke August 09, 2004
