Stomper, I would guess for over here it would be someone who left foot brakes and jacks the brakes on because for the majority of folks, it seems it is far easier to have a feel for pressure with your right foot over your left foot. Thus, using left foot on a hydrolic brake system, the majority would smash way too hard on the brake pedal. I certainly do if I would try to brake IRL with my left foot.
Also, people who right foot brake IRL tend to hover their foot over the brake pedal and eventually relax the leg/foot causing them to press ever so slightly the brake pedal causing their brake lights to illuminate and premature brake wear and heating.