je m'en moque comme de l'an quarante

There was a superstition that the world would come to an end in 1040; after it had passed, this saying arose. The French also say “Je m’en moque comme de Colin-tampon.” Colin-tampon is the name given to the Swiss roll of the drum; and as the other soldiers in the French army paid no attention to it out of jealousy and esprit de corps, this saying arose. Another variant is “Je m’en soucie autant qu’un poisson d’une pomme.”