The Two Ronnies had a sketch called “Rook Restaurant” which served up that benighted bird in about fifty different ways.
Set up at a Ren Faire and you’re golden. 
The Hardtack Shack
Get Your Grubs On
Hard Rocks Café
(It’s amazing how adding one letter can change things, no?)
Whisky-N-Go drive-through bar
What about box lunch? 
Years ago I had these ideas:
House of Cholesterol (“Heart attack or your money back”)
House of Starch (today we’d call it Joe’s Carb Shack or sump’nlike)
An idea I would actually like to try is Steve Martin’s Pizza In A Cup. “People come from all over to get this.”
Too late.
http://www.soyjoy.com/
They went on sale here in Japan last year. Pretty good, actually.
And while there’s no chain here called McSushi’s, fast food sushi is pretty big here as well, as are TacoDogs.
Did they not understand the imagery the name conjures up? Or was this in the Pre-Karen Carpenter days when bulemia was unknown?
I hope they never said, “Your dinner will be coming up shortly!”
There’s a quicky mart chain out west called “Cum 'n Go”, spelled just like that.
Rat in the Box
The Fiendish Wok of Fu Man Chew
Tails A Waggin’ Korean deli.
Inspired by the Piggly Wiggly Chain of grocery stores, I’ve always wanted to open up one named “Fat Ass” so I could hear people say “I’m going down to the Fat Ass for some chips - need anything?”
Intravenous Bacon Fat
Though on second thought…
Yesterday’s Sushi
Goulash Bell
The ChocoPrawn
Just Tortillas
Honeybaked Capybara
Wheetabix & Whalemeat
Stan’s Soupcicles
Land of a 1000 Mustards
Vole Ole!
T.G.I McFiber’s
Years ago, in SoCal, somebody tried opening a chain of fast-ffod felafel stands-it was called "Uncle Moustach’-it lasted less than a year. Seemed like a good idea-basically cheap, filling food-though felafel is about a once a month thing for me.
Also, the old NATIONA LAMPOON did a story about a bogus fast food idea-the "Bunny burger’-it was supposed to be a place where they had live rabbits in cages-you picked out the one you wanted, and it would be slaughtered and made into a “bunny” burger! damn stupid idea-PETA would go absolutely BONKERS!
Yesterday’s Feast (discount eatery featuring what the buffet restuarant down the street was going to throw out)
Mystery Burgers: “We don’t ask; we don’t tell.”
My stepfather called every greasy spoon restaurant he encountered “The Ptomaine Pit”.
There is an actual restaurant called the Skookumchuck Cafe.
Bob’s Burger Barn.
Oh, neither the name nor the food are weird. In fact, they serve up a pretty good burger. It’s just that after you’re done eating they staple your scrotum to your chair.
Or, indeed, the Slug & Lettuce . 
Until you pay the check? Or just for the sheer sadistic fun of it?
And I thought the place on Frasier where they cut guys’ ties off at the knot was ridiculous.
Oh, that’s all done in fun. When they want to get you to pay your check, they’ll instead nail your head to the floor.