Cristiano Ronaldo -- Hairless Moves in St. Tropez (PHOTOS)

Cristiano Ronaldo can teach any guy a lesson ... assuming he doesn't have a hair on his body.

The 30-year-old soccer stud was showing his buddies some moves aboard a yacht in St. Tropez. It's unclear if it's rooted in martial arts or The Village People, but either way he looks good for sure.

Cristiano was on board with Chloe Green, the Topshop heiress. The boat is owned by her dad, billionaire Sir Philip Green.