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That split second of fear that your bowel may just empty itself because you forgot to do something of epic importance.
Groom: "You've got the rings yeah?"
Best Man: ...long pause... "errrrrm...hold on...errrrm..." ...longer pause... "yes"
Groom: "Thank F**k, I nearly had a brown pants moment"
Best Man: "Me too"
by schmowo November 19, 2009
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2
A point in time where one would be left with a proverbial (and occasionally literal) brick in the seat of their trousers.
"Hey, you know that one scene in Band of Brothers, in Bastogne, at the end of the artillery barrage, where Luz and Lipton have a dud shell hit about three feet away?"

"Now that's a brown pants moment if i ever saw one"
by SlavosaurusBlyat December 05, 2016
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