crybully
A bully who harasses their victim, then goes crying fake tears to a person or group of authority or publicity claiming that their victim harassed them, in order to encourage them to wrongly persecute the victim as well.
Des was a notorious crybully, one time he kicked at people building sandcastles in the playground before running off, and by the time we helped clean up those that were hurt, he'd dragged back a teacher and claimed that we'd all ganged up on him!
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