A scorpion, which cannot swim, asks a frog to carry it across a river on the frog's back. The frog hesitates, afraid of being stung by the scorpion, but the scorpion argues that if it did that, they would both drown. The frog considers this argument sensible and agrees to transport the scorpion. Midway across the river, the scorpion stings the frog anyway, dooming them both. The dying frog asks the scorpion why it stung the frog despite knowing the consequence, to which the scorpion replies: "I couldn't help it. It's in my nature."
From the Equalizer..
Robert McCall:*The old man’s got to be the old man. Fish got to be the fish. got to be who you are in this world, right? No matter what
Biden asked a 20-something young lady if she had ever been to a Caucus and then went on to call her a "lying dog-faced pony soldier". It was a line from an old John Wayne movie. Needless to say it didn't go over well.