Top Definition
When Someone is willing to have sex with anything and/or anyone willing to say yes.

Made popular by Tumblr in 2012

originates from Captain Jack Harkness played by John Barrowman in Doctor Who and Torchwood.

Captain Jack Harkness is a 51st century type of guy that is open to the idea of having sex with as many diffrent "Beings" as possible.
Dude, oods are pretty good looking.

~Rolls eyes~ You would Harksexual.
by The Nerd with too much time February 09, 2012
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