a firefly is when a man sets his pubes on fire, proceeds to have sex with a woman (lighting her pubes on fire as well) and finishing off by pulling out and using your jizz to extinguish the flames.
i gave this girl a firefly last night....the flames got a bit out of control...i no longer have eyebrows...
by Grufes December 20, 2010
Get the firefly mug.a boy, suggested to be ludicrous, offten because of the listeners subcontious awarness of words such as goon or loon. can be used to patronise someone young and male
by Grufes April 12, 2009
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