The act of two friends sharing porn and thereby masturbating to the same material. Gay.
Mitch: Dude, you can have my porn if you want.

Brian: No thanks. I don't believe in parallel masturbation.
by The PC Doctor December 25, 2009
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a vagina so cavernous that you can put your junk in sideways.
That girl is so wide, you can parallel park her.
by drdave88 December 08, 2008
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When a man dons a strap-on posteriorly and proceeds to engage in vaginal or anal intercourse with two women at the same time with a back and forth movement. Variations include a woman in the middle, with or without strap-on, and participants of the befitting gender. Other conceivable combinations include any three trunks and a couple holes.
As Stuart trained in on the correct angles, Agnes and Phyllis found the parallel parking quite enjoyable.
by Cabot November 17, 2006
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Rhett and links transcribtion fail. it means "Google it"
Guy nr. 1: "hey man, do you know what encephalitis means?"
Guy nr. 2: "No idea, Parallel to collect"
Guy nr. 1: "what?"
Guy nr. 2: "google it"
by Alabaz September 17, 2011
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1. A specific line of latitude.
2. The official border between north and south Korea.
3. An arbitrary thing to yell during volleyball games.
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angles that are 180 degrees so they form straight lines, thus making them parallel so they will never touch.
___________
___________
^these are parallel angles
by ssyydddd March 22, 2007
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