N. When a girl who is riding slips off and crashes down on the mans erect penis, shattering his "mast" like the tentacle of the mighty kraken
"Wanna do some squats breh?"
"No thanks, still sore from a shattered mast"
by Mundungus Waferbop July 26, 2016
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N. The residual pain left from an extended, but exquisitely satisfied priapism.

V. To satisfy the priapism.
Baby I've still got a shattered mast from last friday.
by Bigsby Hornsworth June 14, 2010
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