What is Opsw?
1.
Obligatory pre-sleep wank. The required wank which occurs just before one goes to sleep, usually to aid in falling asleep. The OPSW is usually done with free internet pornography, including but not limited to the free tour feature on most sites, amateur pages, and pre-teen myspace profiles.
"Gonna go have an OPSW then sleep. Later."
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1.
When a man drops his pants, puts his balls on a girls nose so that the left nut is on one side of her nose and the right nut is on the o..