Top Definition
The act of masturbation. Usually associated with female rather than male masturbation as the act is reminicent of strumming a guitar. (Usually rather rapidly!)
Lady:- Uhh, what a shit day. I'm going to go home and strum one out.

Man:- You'll never guess what? I went home last night and caught (insert name here) playing the guitar. Or at least that's what I thought, but infact she was strumming one out in the lounge!

Lady:- Awww, I'm so tetchy and need a shag!! I'm fed up of strumming one out night after night, at this rate i'm going to get an RSI unless I get some cock!
by Master of Definitions December 15, 2011

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