Top Definition
What happens when two or more funk guitarists end up unsupervised in a studio together.
While the drummer was passed out, Jimmy and Naylor went on a four-hour willy jam that was only interrupted when the singer came back and tied their heads together with gaffer tape.
by Joe January 13, 2004
Painful and infrequently-used climbing move, the level of difficulty of which is only surpassed by the admiration received upon retelling in public house at end of day.
"I was holding a sandwich in one hand, and an eagle bit off my other arm. I had no choice but to do a willy jam."
by Scribe January 14, 2004
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