When a girl is naturally ugly/unattractive, but acquires all the "playing cards" of being attractive in today's world, therefore passing for "hot." Playing cards include, but are not limited to: tight/hugging designer jeans, trendy hairstyle, trendy clothes, hair highlights, etc. Many many girls you see out and about are very ugly-hot.
"Damn, did you see that girl? She was hot!"
"No she wasn't bro, take a good look, her face isn't pretty. She's ugly hot"
"Whatever, she's hot enough to hit it"
a male or female who has both ugly and hot characteristics about them. and is usually doable.
helena bonham carter is the original ugly hot.
pharrell isn't cute he is more like ugly hot.