I can’t change who I am

A scorpion was trying to cross the river. So he found a frog he said hey can you get me across the river. The frog says no because you will sting me. The scorpion said no I won’t because if I sting you. You will die and then I will drown. So the frog says ok just get on my back. They are half way across and the scorpion stings the frog. He says why did you that. The scorpion says because I can’t change who I am……