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1.
To look at someone's features in order to determine that person's level of sexual attractiveness and the extent to which you would like to chuck it in her/have him chuck it in you.
After I nailed her little sister and didn't call back, Kim went on a major bitching tirade. I didn't mind though, since she was wearing a low-cut shirt and it gave me a good chance to check out her amazing rack.
by Nick D March 08, 2006
 
2.
to die, expire, kick the bucket, buy the farm, etc.
Weldon, that old pervert, just wanted to see the nurse with her top off before it was time to check out.
by Snekay February 13, 2006
 
3.
to check someone out, is to look them up and down and assess how atracted to them you are, based on physical apearence only. Can be done by both males and females. If your a straight guy, you would "check out" girls but not other guys - even if you apreciate that they are atractive, this is different to being atracted to them. Obviously if your bi or gay this would change according.
"Why don't we go check out those cute girls?"
by Tfairy April 04, 2009
 
4.
To find out if one is pretty, to determine certain desired characteristics.
Duke noticed the women was pretty after checking her out. (check out)
by Pulsilicious May 08, 2010
 
5.
an inmate's request to be moved to a different housing unit; typically out of fear of the other inmates.
Kevin is a snitch; so I'm bout to kick his ass and make him check out.
by MissCo63834 December 28, 2011
 
6.
To shit ones self
By the time the bathroom became free,I had already checked out.
by Scott McMaster V November 10, 2003