Gary Busey -- I Can Win 'Dancing With The Stars' ... I've Been On My Toes For Years (VIDEO)

Gary Busey has a secret edge on winning season 21 of "Dancing with the Stars" ... he's a ballet dancer ... seriously.

Busey's super confident he can win, partly because of his experience mimicking the Heisman Trophy.

Busey's up against Kim Zolciak, Nick Carter and Tamar Braxton ... but judging from his tour jete in the video, he's not phased by the competition.