Stacy: Let me yell you, last month, I couldn't get a guy to look at me! But ever since I started seeing Joey, the hotmosis has guys crawling out of the woodwork!
Lisa: I know right?! Girl, hotmosis is real!!
High School Make-Out Session, when two people make-out passionately, usually in public, long after they have graduated from high school. The make-out session tends to last too long and be too sloppy, which is totally unbecoming of two adults, but they simply haven't stepped up their game after all these years. The term also implies that the hook-up will not make it past a make-out, again, just like high school. The term carries a bit of shame with it because it shows a lack of bedroom prowess, but at the same time HSMOS's are fun because they remind you of being a kid and tend to be safer and less awkward afterward than say sex.
"How did things go with that guy at the bar last night?"
"Nothing, just an HSMOS, but he said he'd call"
A person who desperately pretends to be heterosexual, yet everyone else can see through their flimsy cover-up and knows that in fact, they're a complete homo
Well, Maureen, you might be fooled by our Jason saying that he wants to join the rugby team to get fit and buff up for the ladies, but he's such a hetmo - he just wants to get his head near other guy's crotches