It's an indirect quote from Monty Python and The Holy Grail "Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony."
I was just about to say it has Holy Grail peasant vibes when I realized it's a very similar quote hahaha
"You can't expect to wield supreme executive power just
because some watery tart threw a sword at you! "
"You can't expect to wield supreme executive power just
because some watery tart threw a sword at you! "