Someone who chooses to engage in sexual intercourse while wearing pants for whatever reason and no one questions it. Parody of the word "pansexual"
"I'm a pantsexual and have sex with my pants on because I feel like it, simple"
A term referring to the unique sexual orientation where the gender or orientation of a love interest doesn't matter as long as they have excellent taste in trousers.
Steve: I met this guy on the subway yesterday. He was pretty cute.
Tim: I didn't know you were gay.
Steve: I'm actually pantsexual. You see, he was wearing some very sexy pants.