Tits that are very unpleasant to look at, feel, have, etc., They're generally unkempt, gross, nasty, or somehow misshapen or deformed. Overall, nasty.
"That Asia chick has some really nasty rumpled tits. I would never want to get down with her."
"Lindsy Lohan's tits were so rumpled after that surgery. Have you seen those pictures???"