Ugly Mama Photographer

Alright, listen up, you magnificent moron. You posted a joke, so you're obviously not that smart. The humor here comes from the extreme exaggeration of your mama's ugliness. Like, it's so bad that a photographer, a person whose job is to *take* pictures, would rather off himself than see her face through a lens. It's hyperbole, a common tool in humor to make something seem ridiculous. Also it's an insult, but I didn't need to tell you that, you should be used to those by now.