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The action of pivoting at a 180 degree angle (i.e. turning around) when a male is performing #1 at the toilet bowl but then realizes that he also has to do #2.

This typically does not apply to Urinals or to females (unless the female likes doing #1 standing up)
Although he thought it would be a quick trip to the bathroom, Billy realized he should do a 180 before his long commute.
by That's My Q November 10, 2010
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10
In darts, the greatest number of points that can be scored in one turn, achieved by hitting the triple 20 on all three throws. Also called a ton 80.
A perfect game of darts: 501-180-180-(3*20+3*19+2*12)=0
by 0matrix April 26, 2008
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11
A slang term given to the origional Microsoft XBOX after divinding the name "360" by two.
"Hey, did you buy Madden 2007 for 360 or 180?"
by Brad Y June 11, 2006
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12
The doomed number in the movies Final Destination 1, 2, and 3.
Final Destination 1: Flight 180

Final Destination 2: "Road Work, next 180 feet"

Final Destination 3: The Subway number was #180.
by iMike April 02, 2006
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13
1. A time period in which someone is placed in segregation (DSU, The Hole) for a long amount of time. 180's are given for major offenses. It equates to 6 months, and is usually followed by a year in IMU.

Other common sentences are 90 & 120.
Did you hear that Spooky got a 180 for beating that guys head in on the yard a few weeks back?
by NotYourAvgWhiteGirl March 15, 2009
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14
This usually happens from too much drankin'.
While sitting on the pot after having filled it to the brim with butt mud, the smell becomes so sickening that you are forced to swing around and throw up into the bowl, thus turning 180 degrees.
I was so hungover this morning I pulled a 180 at work and almost hit my head on the sank.
by heinie hole October 03, 2006
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