A person who is interested in having sex not only with an opposite sex but also with same or anything. Trisexual is basically a person who will do anything to get pleasure, be it have sex with a girl, or have sex with a rubber doll. 95% of the time when a trisexual has sex with same gender, he does not have any kind of romantic feelings for him, just purely sexual desire for pleasure and nothing more.
Guy 1: He loves his girlfriend, but he wanted more then just pussy, so he tried having sex with a shemale to get pleasure from the anus g-spot.
Guy 2: So what does that make him?
Guy 1: Trisexual
Guy 2: So what does that make him?
Guy 1: Trisexual
by PsychoDevil March 23, 2010
Andrew: Damn, Sarah is looking fine today...so is Jim... so is my hand.
Bill: Dude, you're sol trisexual
Bill: Dude, you're sol trisexual
by dooblet February 17, 2011
by foreign lauren July 21, 2006
to have sex with your own sex, the opposite sex and yourself...and possibly animals, i don't know whether they count as hairy people.
oh my! a trisexual, don't you want to just be sick, they are so disgusting, sex withoneself, then others...of both sexes!?!?
by jack February 11, 2005
by Josh Lioliodis April 08, 2003
by Delly April 23, 2005
by Wouldn't you like to know? April 06, 2005