Joking aside, whipsaws are two man saws, because the blade is so long and flexible it cannot be pushed.
And there are two ways of sharpening and setting teeth of such saws. Cross cut saws have teeth with only a small amount of set and sharply pointed teeth, meaning alternate teeth are bent only enough to make cut slightly wider than the thickness of the saw. Ripsaws are for cutting along the length of the log, and must have extra width to the set to overcome tendency of wood halves to bend toward the cut, pinching the blade and the teeth have chisel like points.
I think the name "whip" came from the rapid long arm motion possible with a two man saw.