Someone who is threesexual has no interest in a relationship with another person of the same sex, or indeed in one-on-one sexual encounters with someone of the samesex but who engages in same-sex sexual acts as part of threesomes or groupsex.
'Hey, I saw you giving that guyhead at that orgy last night, I didn't know you were gay.'
'Oh, I'm not gay, I'm threesexual, my girlfriend was helping me out with it.'
'Oh, cool'.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).