Lol she's a filthy moron, I have lived within walking distance to the beach (in Australia!) for the last 7+ years & was raised close to the beach, most people I know wear thongs (flip-flops) unless they're on the sand or the grass. Or walking back to the car from those two locations. Not wearing shoes in the supermarket, cafe or other public places is just plain gross & classless. Many places even have signs up saying something like "No shoes - No service".
I don't understand why she takes such pride in being disgusting. Not showering, not washing her hair, staying in her sweaty gym-gear all day, shoes on the carpet, barefoot in public... its just gross.