look up any word, like rimming:
 
8.
the one after 2nd base.
1st Base, 2nd Base
by uknown February 07, 2003
 
9.
Anal... the new 3rd base. Doesn't count unless it is in the stink.
Serge: "Oh man! I got to 3rd base last night with that hottie from the club!"
Chris: "Nice! How was the head?"
Serge: "What? That was 1/2 a base ago, I plowed that asshole."
by TSFfoLife December 29, 2010
 
10.
In the corresponding bases, 3rd base involves oral sex, either a girl giving a boy fellatio or cunnilingus.
Kristi and Ben got to 3rd Base when Kristi gave Ben fellatio.
by Miketee May 16, 2009
 
11.
3rd base is oral sex. Cunnilingus or Fellatio. IT DOES NOT INCLUDE HANDJOBS OR FINGER SEX, THAT'S 2ND BASE.
"C'mon babe, everyone else is doing it... Let's go to 3rd base!"

"No way guy, you've got herpes."
by JediKnightBoB August 14, 2008
 
12.
A popular clothing store in South African malls.
"Have you seen the new sneakers in 3rd Base?"
by Mark Hawkins May 27, 2004
 
13.
In dating, the act of oral sex on a woman
Due, I got to 3rd base with my girlfried last night!
by hooligan333 October 06, 2003
 
14.
Spelled '3rd bass'
Legendary rap band from the late 80's, who boasted the dope ass album "The Cactus LP"...
Yo homes, 3rd bass still rocks!
by Stanz June 19, 2003