Top definition
The ripped guy in a particular group that works out a lot & takes off his shirt every. chance. he gets.
They could understand that Matt was Shirtless Guy when he mowed the lawn, or played basketball, or fetched the mail from the mailbox, but to their amazement, Matt was Shirtless Guy for Thanksgiving, when it was 15°.
by catfight12 January 12, 2009
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