Definitions by Trashy Freeman

Ass sweater 

A sweater a woman ties around her waist to hide her ass while jogging, walking or exercising. While most of these women have good figures from their exercise, they are likely self-conscious of others staring at their ass.

"Wow--check out the tight body on that jogger!"

"Yeah...it's too bad she's wearing an ass sweater."

Ass sweater by Trashy Freeman June 2, 2009