The warm coat left on your teeth after giving a blowjob.
"After taking my man juice's moneyshot last night I woke up this such a tooth sweater."
June 2, 2009 Urban Word of the Day
When you go for a day or so without brushing your teeth, and the texture in your mouth feels like your teeth are wearing fuzzy little sweaters.
"Does anyone have gum? I forgot to brush my teeth this morning, and it feels disgusting."
"Oh, you've got tooth sweaters?"