2 definitions by WeALLknow

To do something incredibly stupid, repeatedly. Usually involves an action that is more harmful to yourself than others. Esp when involves lying.
I tried to help him out after his girlfriend kicked him out, but he thomas-upped and I had to bail him out of jail.

She was all over him, but he thomas'd it up and went home alone!

I invited him over for a drink, but he thomas'd me and I had to call the cops.
by WeALLknow January 25, 2011
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To get absurdly drunk, find the sloppiest chick in a party, then fuck her on the lawn of any structure (usually fraternity houses).
"Dude, Mike got way to messed up and ended up lawn sloshing last night."
by WeALLknow October 19, 2012
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