Is it normal to drop a road roller on a 17 year old high school boy?

I was in a mist battle with a high schooler and his grandpa, they haven't found out the full extent of my ability and I threw knives at the grandpa and took his blood, I became stronger and dropped a road roller on his grandson, but I must ask, is that normal? Is there a better way to rid the Joestar Blood Line without using a Road Roller?