What's opera, Doc?

Dressed as the demigod Siegfried (and cutting a less than impressive figure as such), Elmer Fudd is pursuing Bugs Bunny when he finds rabbit tracks and arrives at Bugs' hole. Elmer jams his spear into the hole while singing “Kill the wabbit!” repeatedly (to the tune of Ride of the Valkyries from Die Walküre). Bugs sticks his head out from another hole and converses with Elmer about the latter's spear and magic helmet. This prompts a display of Elmer-as-Siegfried's magical powers. Bugs flees in fear, and Elmer pursues.