A euphemism for masturbating.
Girl: Got any plans for tonight?
Guy: Not much, probably just playing the flute solo, if you know what I mean.
Girl: Want to make it a duet?
Guy: Not much, probably just playing the flute solo, if you know what I mean.
Girl: Want to make it a duet?
by "Nasty" Nate April 05, 2008
Get the playing the flute solomug.