A phrase meaning a person who has evolved beyond the limits of sexual orientation.

A person who would be happy with any kind of person. Female, Male, Android, Non-gendered alien species etc.

Originated on the BBC series Doctor Who in reference to the character of Captain Jack Harkness.
Relax he's a 'Fifty First Century Guy' he's just a little more flexible when it comes to dancing.

How flexible?

Well by his time your species has spread across half the galaxy.

Meaning?

So Many species, so little time.

~The Ninth Doctor to Rose Tyler

Hey did I see Chris go home with Shelia AND James last night?

He's a Fifty First Century Guy.
by flashwildecard June 21, 2011
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originally coined by the movie "Horrible Bosses" by Jason Sudeikis' character, Kurt, defined as having sexual intercourse doggy style on a road map of the United States. (including Alaska and Hawaii)
Yo dude, his wife is so hot. I'd love to bend her over a barrel and show her the fifty states
by onetimething July 18, 2011
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When a friend is around the opposite sex and their significant other calls them. And then they walk away about 50 yards and talks very quietly on the cell phone to avoid being in "trouble".

This term also includes :

Going outside to talk on the phone, to the restroom etc..
Brandon - "Yo where's Squanto? Linda is asking for him."
Jim - "He is making a fifty-yard phone call."
Brandon - "That sucks, is he in trouble?"
by Night Marauder August 17, 2007
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Semi or bolt-action rifle usees the half inch (.50) caliber for use against enemy vehicles such as tanks or to shoot the engine block out of a car
The m82 barrett is scarcely used due to it's large round
by Mystrick August 7, 2003
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Willing to bet how ever much money you say, that the statement you make is true.
Let me keep it a buck fifty, pizza is only meh

Or

Imma keep it £3.68 dogs are better than cats
by Ddeezzz nuttzz June 4, 2022
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The red line train that runs from howard to 95th street in chicago.
Homeless people use the red line train in chicago as a dollar fifty hotel room.
by dave February 4, 2004
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