If Hitler was alive today, he'd probably be sitting in a booth at Denny's, ordering strudel. The question to ask is not , "When did Denny's start serving strudel?," although I suppose that's valid. To which I'll respond, "last Tuesday." Nor is it, "Wouldn't then, if he was alive, make him some sort of zombie or cyborg or something?" Also a valid, yet horribly worded question that I'll leave up to your fertile imaginations.
The real question is:
What in the Mein Kamph would Adolf be doing at a Denny's in the first place?
A) Getting his free birthday meal, of course! Der führer was born 4/20/1889! Duh!
B) Getting his munchies on, of course! No place better than Denny's to drag your stoned-ass into, after a long hard day celebrating "National Pot-Smoking Day!" Double Duh!
C) Fill in the blank