TI

The act getting busted by the ATF for buying illegal machine guns and silencers either by
(1) Doing it yourself
(2) Hiring a bodyguard to do it for you - all because you are a convicted felon who cannot own guns.

Puff Nappy's eyes got REAL BIG when he was suddenly "TI'ed" as he took possession of those illegal machine guns he purchased to take back to da hood.

by You Got Busted!! ha ha October 30, 2007

tis

To answer in the affirmative

"Is your cock ready to rock?"
"Tis."

by Mr Special August 16, 2019

TI

1)Can stand for Teen Institute, a group dedicated to helping young adults avoid substance abuse. Is somewhat similar to SADD, but sometimes people are slightly less likely to join it just cause their friends did. In some schools, TI and SADD are combined due to their similar goals.
2)Texas Instruments, manufacturer of many fine calculators, such as the TI-83 (a godsend for algebra students), TI-84, etc.

1) "They went to the TI meeting."
2) "I have a TI-83 calculator. w00t!"

by killerfiller December 17, 2005

TIS

That is Shit

when someone tells you that they just won a prize

TIS

by nitpicking61 January 12, 2012

tis

It is. Opposite of taint.

I was scratching my taint and I found my tis.

by 50 cent crack dealer July 31, 2003

TI

A rapper who likes to whine alot

If I wanted to hear a black person whine I'll turn on Cops or Judge Judy.

TI looks and sounds like he never broke puberty.

by Lotuseater July 27, 2006

TI

The abriviation for Treasure Island the strip club.

Lets all go to TI!

by your mamma March 5, 2003