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1.
Is an abbreviation of 'TinyBallSack'. It is often used as an ironic way of describing ones manhood.
Dave: I have TBallS, In the shadow of my massive C....
by jchuck March 27, 2008
 
2.
street lingo for a game of tennis
yo man u coming 4 a game of t-ball this afternoon...
by lloydbanks25 January 18, 2009
 
3.
When a person is so high on an eight-ball that they actually allow a friend, relative or stranger to teabag them.
Dude, I was so f--ked up last night on that eight-ball you gave me that I let my step-brother t-ball me!
by gt50025 January 22, 2010
 
4.
The act of placing ones genitals on the forehead of the intended victim, while they are knocked off by another mans Bat.
"Joe T ball me off Amy's head, and nearly hit a home run!"
by Patewerth January 15, 2008
 
5.
1. The act of putting a man's testicles on a short pole and beating the shit out of them with a baseball bat.

2. Putting a man's testicles in a woman's mouth and beating her in the head with a metal baseball bat to near death .
I was playing t ball with Jenny and she bit down real hard before she fell.
by luh luh lammy October 15, 2007