A sexual orientation directed towards Morbius.
A morbsexual person is attracted to Morbius sexually, they want to fuck Morbius.
Person 1: Are you straight, or do you have another sexual orientation?
Person 2: I'm morbsexual.
Person 1: What? Morbsexuality isn't a thing...
Person 3: Um, actually, morbsexuality is a serious thing and anybody who has watched Morbius is easily morbsexual.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.