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1.
1. VB trans. to succesfully complete, realise, or overcome a difficult problem or situation with rash optimism.

2. VB intrans. (taking pronomial "it"). to play up, act outrageously, to tansgress accepted social mores.
1. "I'm not sure whether I'll have time to go to the pub tonight and to write my dissertation on figures of the Enlightenment. Actually, to hell with sleep, I'm going to bad boy both of them!"

2. "Wohow, exams are over, tonight I'll be as drunk as a skunk, climbing up lamposts, bad boying it all over town!"
by Stephen G June 04, 2005