4th base 

sex

When you go to 4th base w/ someone...you have sex

4th base by kristy June 30, 2003

4th Base 

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.

Jerry left Bible study early, so 4th base was as far as we got.

4th Base by Skullwood June 30, 2015

4th base 

TO FUCK LIKE A DOG !!!! when u tell someone you got to 4th base they are very proud

i told my dad i got to 4th base with my gf he gave me a pat on the back

4th base by porno May 23, 2005

4th Base 

When you have sex (looking this up is kind of sad)

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!

4th Base by Gioj4 October 11, 2008

4th base 

to get to 4th base is to have anal sex.

"I got to 4th base last night with jenna"
"oh so you had anal sex with jenna?"
"yep, that's what 4th base means"

4th base by sam all together August 30, 2007

4th base 

Hand-holding under Jesus name.

Girl1: Hey, guess what?
Girl2: What??
Girl1: I just went to 4th base
Girl2: OMG how was Jesus!?

4th base by JesusLuver101 January 23, 2024

-4th base 

When you die trying to get to 4th base.

Guy: Hey dude! I hear you got to -4th base last night!!....
dude?...dude...?...

-4th base by link2link25 February 27, 2010