Baki's dad grabbed him by the foot and used him like a pair of nunchucks to beat a vehicle to near scrap. Being slammed into sand shouldn't hurt nearly as much, lol. Baki used the car parts broken off to make a small man shaped toy for his father while being smashed, too.
Also, when are new guys gonna stop underestimating Baki? The whole world should know by now he held his own against his father, the so called 'strongest creature in the world'.