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1.
A person whose sexual orientation does not interfere with the prospect of a good time
Woman: "People say I'm a Fun-Sexual. I'm up for anything: men, women, animals, dead people; it doesn't matter as long as I have a blast!"
Man: "Marry me!"
by Horeilly Jr February 13, 2011
 
2.
The sexual (or romantic) attraction to fun people, regardless of gender or other factors.
Yes but you will never be as funsexual as Captain Jack Harkness.
by pinkplushdino July 06, 2011