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To flexed all of the muscles in ur body at the same time.
1. Dude, my girlfriend walked by this guy and as soon as he saw he flexed-out.

2. Whenever I see a hot girl I get flexed-out to look buffer.
by J I Z Z L E March 10, 2009
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When you have sex with a girl and she is left wore out spread eaglet
That girl was fine, i left her ass bucky naked and flexed out
by ulubme April 10, 2014
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