A person who is in no way, shape or form conventionally attractive but everything they do, how they talk, how they walk and the way they move is so incredibly hot that it makes them somehow better looking. Is still centered on physicality, but is more about how they use their body/body language than their ugly faces. Coined for my former high school Chemistry teacher; are often tall, gangly and interesting men like Chris Martin from Coldplay.
"Oh look at that gangly, odd looking, very hot strutting guy over there!"
"He's not hot, he's uglyhot."
"Yeah, and uglyhots are incredibly rare, so I'd totally do him."