Dancing with the Stars competitors who've been dressed down by judge Bruno Tonioli should keep this in mind: Back in the early 80s, Tonioli was an in-demand music-video dancer who had something of a starring, super-revealing role in Elton John's classic "I'm Still Standing" video.

Now 55, Tonioli was in his late 20s when he appeared in the free-spirited 1983 clip -- in which singer John is flanked on the beach by a bevy of dancing, scantily clad men and women.

On Monday's DWTS, after Tonioli likened Kendra Wilkinson to a "stripper," co-host Tom Bergeron cued up a tape of the "Standing" video, in which the acid-tongued judge shows off his toned, rather petite bod in speedos, a tight body-suit accessorized with studs, zippers, 80s-style shades and other daring outfits.

The clip -- which some DWTS fans have already discovered -- was played in honor of judge Len Goodman's 67th birthday.

Watch the hilarious flashback -- and Tonioli's mortified reaction! -- now.