Top Definition
The almost magic-like phenomenon when someone who needs to take a really bad poop gets within 20 feet of a toilet and immediately they have an almost uncontrollable urge to crap.
Dude I was flexing like Mr. Universe on that road trip and when I got into McDonalds my radar sphincter went off and my turds were coming out like people in a burning building.
by T Macalicious November 24, 2010

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