by porno May 23, 2005

"I got to 4th base last night with jenna"
"oh so you had anal sex with jenna?"
"yep, that's what 4th base means"
"oh so you had anal sex with jenna?"
"yep, that's what 4th base means"
by sam all together August 30, 2007

You've left third base already, but failed to reach home. Now you are currently stuck in the twilight zone of an awkward, in-between base. I am not talking baseball.
by Skullwood June 30, 2015

by link2link25 February 27, 2010

Guy: Baby Lets go to 4th base tonite
Girl: I'm On my period
Guy: oh come on i been wanting to nail you for ages!
Girl: I'm On my period
Guy: oh come on i been wanting to nail you for ages!
by Gioj4 October 11, 2008

by JesusLuver101 January 23, 2024
