Scrart
An anus-itch-scratching fart.
Dude, my asshole itched something fierce yesterday; plus, I had some medieval gas pains. I took care of both problems with a giant scrart.
Scrart
A scrotum fart, which happens when an air pocket of gas gets caught between the butt cheeks and has to travel to the side of the ball sack to find a way out.
That scrart gave me a boner!