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The feeling of an expanded anus after a large discharge of waste has been released from the body
Rupert- Oh man I just took a huge dump.
Francis- Wow dude you are so sphinct right now.
by Ira Auberg July 10, 2008
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2
1. A bone in your butt

2. A term of derision, usually applied to small boys ages 9-11 who are foolish and immature. Such boys are often skinny distance runners. They will usually attach to older roll models, often cousins, and refuse to stop annoying them despite countless hints, suggestions and outright commands to stop.

also they are often named Koby
by zachattax August 15, 2010
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4
(verb) to have anal sex with a girl.
Bob: "Dude, did you sphinct her?"
Joe: "Did I what?"
Bob: "Sphinct her. You know, did you have anal sex with her?"
Joe: "Yeah. And ohhh, I get it now; sphinct her, like sphincter... nice."
by josh_SLC January 27, 2010
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