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1 definition by Wanalmorgasm Simpson

To masturbate (wank) in ones spare time.
Example 1:

Friend 1- Oh I'm so bored, I've got nothing to do!

Friend 2- Go have a sprank.

Example 2:

Me - Wooo I'm unemployed, gonna go have a sprank!!
by Wanalmorgasm Simpson February 24, 2013