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Abbreviated form of "Good luck with that shit." Usually said to someone trying to accomplish the impossible.
"My dream is to have sex with a supermodel."

by woofrikinhaw May 03, 2007
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Good luck with that.

Can be used in texts and/or I.M
In a text:

Johnny: Oh crap, i have to write a 1000 word essay by third block!

Doe: GLWT, dude!
by yreva11 October 15, 2008
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Person 1: I'm going to leap over tall buildings with a single bound.
Person 2: glwt
by Ten Ton Tigger November 05, 2013
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