Top definition
i. to give an excuse so that you are not forced to leave your room and enter the outside world.

ii. to claim that you can't go do an activity, like a pussy

synonomous with "bitch out"
Justin decided to JB out of going to the Mariner's event so that he could play HALO and jerk it to Tobey Maguire.
by JustinSucksAss January 10, 2009
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