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The sound made in bullet-time (super slow motion) when multiple shots are fired from a gun. The noise is created when the bullet breaks the sound barrier, and the air disruption alone creates sound. Intended to mean that you have a big ass gun, and you intended to shoot the hell out of it, at someone. Legend has it that when someone has enough hate towards their enemy, the bullets themselves take on a life of their own. Instead of just blowing by, they hiss at the victim, and it is said that so many bullets fly at once, that if you hear the tsu tsu, only a miracle can keep you alive.
Eat shit dude otherwise you can feel the wrath of the tsu tsu.
tsu tsu by Supersavage June 9, 2005
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Femals nipple, or baby sucking device
"A Den Tsu Tsu" - "Do You Want To Suck Nipples
Tsu Tsu by AzOOmA May 20, 2003
Kwan-tsu is a state of mind; it cannot be defined.
First coined in the film "Surf Ninjas"
"Kwan-tsu dudes!!", "Todd is not kwan-tsu", "Are you trying to kwan-tsu tonight?"
kwan-tsu by Tom and KEviin November 5, 2007
Thrift Store Underwear, the name for the broadband reports forum where they have heavy handed moderation and the desire to lock and delete threads. Moderators do not follow rules and instead make them up to suit their own needs. This website disregards the site rules and accordingly, bans users based on purely personal grounds.
Aww man TSU locked my thread again.

TSU has me on post watch for no reason.
TSU by about time December 25, 2007

dino.tsu 

The kindest and most beautiful person in the world.
She's a true treasure
A: Are you mutuals with dino.tsu?
B: Yes! She's my favorite mutual!
dino.tsu by Womenlover12345 November 6, 2021
A.K.A. Tear Shit Up
-Noun, verb, adjective
To do, be, described as something so beastly that you cannot reason with yourself.
Billy TSU so much at the basketball game that the whole entire school shook with a 9.0 magnitude earthquake.

Jamal's dance moves were TSU so badly that everyone fell down.

Michaella' s TSU playing the tuba was so extreme that it made the judges cry in joy.
TSU by GREENEGGSandSAM October 26, 2010