When you get diarrhea from drinking too many Red Bulls.
"Oh man, after that last Red Bull, I've got a serious case of Running of the Bulls. I may need to change my underwear!"
by SkinItBroham June 22, 2013
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An extreme sexual manuver when a man is on top of a woman and the man tries to throw the woman around the room while still maintaining insertion.
Guy 1: Did you hear? Bob and Lisa went to the running of the bulls?
Guy 2: Naw d00de.
by CamRon Bawllsack March 11, 2008
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A unique practice where unimformed, misinformed, or ill-informed, foreigners that know nothing of the history of Pamplona and/or the practice of the running of the bulls, dimisses it to be simply a pastime where drunken farm boys, drunk off of whiskey and barly beer, make their way running through town as they are being chased down by a pack of angry, yet amused bulls.

These boys often scream in terror, shouting phrases like "wordOwch! my stomach lining!"/word or "wordMy blood hurts!/word" Or something of the sort while, routinely, but traditionally, being gorged, or even gutted by the horns of a bull.
The running of the bulls festivals is held in Pamplona, Spain, every year, for nine days in July.
by Tai July 09, 2003
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when yo bowls emit a loose, light brown (or sandlewood, if you will) fecal discharge at an inopportune momemt.
Egad, Chalmers, I'd love to continue this conversation, but I must make haste to the toilet as I've just had a little running of the bulls
by Colin Bowel October 20, 2003
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To operate a motor vehicle (most often a Harley) on a public street and/or highway while intoxicated and/or high, in close proximity to (beside) a vehicle(s) operated by law enforcement personell instead of looking for an alternate route.
I smoked a big fatty and had a few Jack and cokes then Ran with the Bulls all the way through town.
by Hadyomama June 08, 2005
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something only real morons would participate in; of course they learn the hard way when a bull decides he's having rump roast for dinner
by Alex July 11, 2003
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