The act of male masterbation that involves playing with one's member somewhat like a banjo (or guitar).
Look mum! That old man's playing his man banjo!
by Wetpants January 12, 2011
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ohhh dude i was so horny last night but my girls outta town so i had to spend the night strumming my man banjo
by jonbalbach June 30, 2009
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A guitar with a blown up balloon in the sound hole to make it sound like a banjo.
I don't have enough money to buy a banjo so I'll make a Poor man's banjo.
by EDY28 June 28, 2021
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