OMG! Patrick Dempsey Struts Around in a Thong!

Credit: Michael Rozman/Warner Bros.

Most people would grimace getting underwear for a present -- but not Patrick Dempsey.

On Thursday's Ellen DeGeneres Show, the Valentine's Day star, 44, says he can't stop wearing Ellen undies around the house.

See photos from the Valentine's Day premiere!

"It is a great gift," he says. "You get this wonderful gift that says 'Ellen' right here on the band. It is fantastic underwear."

To celebrate Valentine's Day, DeGeneres slips him some red velvet boxers, silk boxers, rubber boxers and an Ellen thong, which he happily tries on.

"Keep those on," DeGeneres tells him. "You will always have my support."