Sleep Wanking

The act of ingesting an entire bottle of sleeping pills and then attempting to whack off before falling asleep.
Martyn: You guys ever tried sleep wanking?
Zach: Yeah! It's great cause you always win
Steven: Unfortunately you can never stay awake long enough to clean up the mess...
Lads: Aye!
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Sleep wank

To wake up and find you mysteriously have a knackered arm
"ahh shit i must have been sleep wanking all night"
by TMB June 17, 2003
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pre-sleep wank

To have a nice goodnight bat after a long stressful day of being horny before going to sleep, just to get it out of ya system.

This is the most common form of stress relieving therapy.
B1: i slept like a baby last night ....

B2: hmmm pre-sleep wank huh?

B1: precisely B2
by kooni June 06, 2007
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