Jessica Simpson may not like John Mayer’s outbursts about the intimate details of her life — but the blonde’s got no problem dishing out a few TMI Moments of her own. Like this one: the singer/actress revealed a very personal tidbit about her hygiene…or lack thereof….to iheartradio.com Thursday, saying: “I don’t brush my teeth .. No, really! I just use Listerine — and sometimes I’ll use my sweater…..”

At least now we know what to get Jess for her big 30th birthday this summer: A toothbrush!