2 2 base 

a feelski; not quite 2nd base, but 2 2 BASE

Jim: Dude, how far did you go with your date?
Bob: Well, I went to 2 2 base.
Jim: Dude, you pulled a feelski? You're such a player!

2 2 base by Petro McDonald May 7, 2008

1/2 base 

Masturbation

Girl 1: "So what have you done?"
Girl 2: "Done?"
Girl 1: "Like...bases."
Girl 2: "Oh! 1/2 base, first base and second base."

1/2 base by grizzy411 July 26, 2012

1 1/2 base 

when a man and a woman love each other very much, and they want to express that love, there is a special handshake involved. The man will look longingly at the woman's right pinky-nail, and love it all the more. In turn, she will hide it from his sight, in order to save this lustful deed for marriage. However, if she is feeling frisky she will caress his clavical with her forefinger, thus the deed is done.

Not being brought up like a proper young lady, marcy gave in to 1 1/2 base.

Oh man, that chick just went to 1 1/2 base with me. Tomorrow I hope for 2 3/4 base. Yeaahh

1 1/2 base by marcyluvsyou August 14, 2008

Base 2.5 

It refers to a point in the base system between 2nd base and 3rd base. It is dry-humping. It has always seemed more than simple groping but it is less than the handjobs/blowjobs of 3rd base. Dry-humping now has a definite place on the base system.

guy1: hey, y'know the base system?
guy2: yeah?
guy1: wher does dry-humping go?
guy2: base 2.5
guy1: ok cool thats good to know
guy3: you guys are fucking retarded

Base 2.5 by uberjai July 27, 2012

Base 2.5 

Base 2.5 uses powers of 2.5 for the numbers, it is considered binary and Base 5 at the same time.

Oh look! Base 2.5 isn't used! What a bad day!

Base 2.5 by MandullorTheBEEKER October 31, 2021

Base 2.0 

Like second base, but much kinkier. Can involve hands way down pants, way up shirts, etc.

"Dude, me and Mattie went to Base 2.0 last night! It was hot!"

Base 2.0 by antithesis3 January 6, 2009

Base 2 

An alternate name for binary.

"Hey base 2. My name is binary"

Base 2 by BreadAndEggs July 8, 2025