I once saw a pair of snakes copulating in deep grass, and grabbed what I thought was just
behind the head of one, but was so far behind that he (or she) turned around and bit me.
The two of them would have half filled a bushel basket. I was so busy trying to persuade
the one biting me to let go, I never thought of trying to make a caduceus of them.
And I was unable to get the faintest clue as to who was doing what to whom. Alas.