"butterburgers"? You talking 'bout Culver's in Austin? Their thing is that they put butter on half of the bun. Boy, you 'muricans, *sigh*, we been buttering buns up here in Canada forever!

Joking aside, they do make pretty good burgs.

Hot buttered BUNS ferever!
(Actually, that could be a whole other thread, on a whole other subject, in a whole other universe. Okay, I'll go quietly . . .)
:-)