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.
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."
That split second just as you realise something really bad has/is about to happen, your stomach feels like you're falling off the top of a tall building and your sphincter grips up tighter than a Duck's Arse.
1. I was in the office late at night and thought the place was empty, I was just about to start Rounding up the tadpoles when a cleaner walked in! There was a sphinct-o-second moment while I frantically packed my todger away.
2. Sent a sext message saying "I'll be home in 5, lube yourself up!" and as I hit sent, I saw "Received: mother in law" !