a pilots term meaning look behind you
can also mean to check the ass on a chick or check out a chick out behind you
check six and check the six on that chick
by check six January 27, 2006
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1. In fighter pilot parlance, to check ones tail for enemy aircraft-the aircrafts 6 'o clock 2. To check ones ass for dingleberries after an especially powerful shit
by Labordehater February 10, 2003
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A term often used and popularized by the military to check at your 6 o'clock position. Which would be right behind you at any given point.
Sergeant: Private, check your six and tell me if you see any bogeys.

Private: Yes sir!
by CallmeCj December 30, 2013
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An expression used to inform someone that there's a target at their 6 o' clock position.
1: "Check your six."
2: "... Damn."
1: "Told ya."
by n00bert May 3, 2007
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