"I don't brush my teeth," she said in an iheartradio interview. "No, really! I just use Listerine — and sometimes I'll use my sweater."

The YouTube clip got over 200,000 views in its first two days. Simpson appears to have perfect teeth, and viewers had a lot to say about her alleged dental hygiene.

"OMG! I can't wait to see what she looks like in dentures!" one person commented. "Periodontal disease is contagious… FYI: don't kiss anyone who doesn't brush their teeth!"

"Who believes it?" asked another. "How can't she brush her teeth but yet have such white teeth?"

"If she didn't brush her teeth, they sure as hell wouldn't look like they do!" agreed another. "Unless she has false teeth….it's possible. Julia Roberts does." (Cosmetic dentists report that Roberts has one of the most-requested celebrity smiles.)

"I've heard of homeless people doing this technique," scoffed someone else of her teeth cleaning claims.

Simpson could be a spokesmodel for cosmetic dentistry… but dental hygiene and tooth cleaning, not so much. Let's just hope she was joking.

Watch the YouTube video