1 definition by aStar8

Top Definition
The wet mark that appears on your t shirt when holding the side of a cold beer accidentally against it while chatting to mates, also often occurs while watching sport
Jim: Mate you've been holding ure beer against ure shirt & it's all wet
Bob: Ah, yet another t-shirt beer mat!
#tshirt #beermat #wet shirt #drinking #drunk
by aStar8 September 21, 2009
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