screwfoot
In surfing or skateboarding, a rider that rides with his/her right foot in the back position, as opposed to a goofyfoot that drives with left foot back. A term for a "regular foot" stance. This is from the early 60s and I haven't heard it in regular use for decades: that doesn't mean it was never a a tru-up word.
That guy's a radical goofyfoot but can switch-stance to screwfoot so casually you hardly ever see the move.