Top Definition
A girl-friend who gives you a never ending boner while your hangingout with her; during good times and bad.
Kyle: Hey Jake, Sarah is a total bonergirl.
Jake: why?
Kyle: Cuz whenever I'm hanging out with her I get a boner that I can't get rid of know matter what we do.
by Cult February 12, 2014
5 Words related to Bonergirl

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