When you fuck a girl in the butt, and she puts diarrhea on your dick, and then you take it out and put it in her pussy, and the wetness causes a queef. That's a zizzle fart.
Caitlin:"Okay, so last night night, I did the worst thing ever to my man..."
Jennie:"What'd you do to him?"
Caitlin:"Well, he was fuckin me in the butt, and I just laid a zizzle fart all over his cock..."
Jennie:"Oh, that's siiiick..."
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.