The standard Mexican Mafia tax on illicit proceeds in prison or on the street.
Ex. 1

Prosecutor: Are you familiar with the concept of thirds?

Boxer: Yes, thirds.

Prosecutor: What's that?

Boxer: Thirds is the standard tax on anybody, particularly for individuals coming into a prison setting. Anybody coming in with drugs or any illegal material, any contraband, they're required to give us a third, the Mexican Mafia members a third.

Rene 'Boxer' Enriquez, Testimony in USA v. Jaimez et al., September 12, 2018

Ex. 2

Boxer: I got an assignment for you. There's a trap house in Boyle Heights run by a dude named Nico. He's bragging about being tax free. It's on Matthews across the street from the high school--

Savage: --Isn't that the school where Jaimie Escalante taught calculus to all them cholos and jainas?

Boxer: Uh huh. And like Mr. Escalante, you're gonna teach Nico some math. Specifically, how the concept of thirds works. Make sure he knows that La Cliqua sends its regards.
by ZXY&ABC January 27, 2021
Get the mug
Get a Thirds mug for your cat Zora.
The state of the Penis which is not quite a Semi, but definitely not completely flaccid.

'Third on' - Literately a third of the way through the erection stage.

"Dude, she's almost hot, I've kinda got a third on going on!"

"Wow that was an long drive, I've got a third on 'cause of the chaffage.
by funkymunkey101 March 15, 2009
Get the merch
Get the Third on neck gaiter and mug.
1.Also used when there is a compelation of he said she said bullshit in the flow of gossip
2. Too many stories aka lies
"I aint trying here this that and the third, 'bout how you don't got my money".

"First you said you was with doe then you said you went shoppin.. I aint trying to hear this that and the third just tell me where the fuck you was at."
by AkaDOEmiks February 15, 2006
Get the merch
Get the this that and the third neck gaiter and mug.
The third born child from a particular family. Usually used as a derogatory slur, the name "Third" implies that the individual is an accident or unwanted because of overpopulation.

The term originated from the book "Ender's Game". The setting takes place in the future and because of Earth's overpopulation, all families are only allowed a maximum of 2 children. However due to Earth's need for a super commander of all space forces, the Wiggin's are allowed to have a "third".
Child 1: Don't talk to him. He's a third.
Child 2: Yeah! Third! Third!
by Labadeeba March 12, 2008
Get the mug
Get a Third mug for your Facebook friend José.
A nonalcoholic beverage consisting of roughly one third sprite, ginger ale, and coke or 1/2 sprite, and 1/4s of coke and ginger ale
Barboy, Beer-me one Third,
by radarhut December 18, 2010
Get the merch
Get the Third neck gaiter and mug.