A girl who will appear to be moderately attractive, but will always give that feeling that something is slightly off. This is due to the fact that she's got a large adam's apple, and balls.
Will tuck genitals in between legs and slip down clothings just past the buttocks to provide the illusion of female body parts. Reveals erect penis after intercourse for shock value.
"Dude, watch out for that chick.."
"She's got a huge adam's apple, I think she might be a Catrin.."
"Oh man, you're right, and look at that huge junk-bulge"