ok this is slightly off topic but still.....
one time i heard this comedian and he did this thing about mcdonalds and how when they advertise things on thier comercials they always say " at perticipating locations only". Well he said it would be funny if there was a mcdonald that refused to do anything the other ones were doing...
"do you guys have hamburgers"
"No, we serve spaghetti here"
the first time i heard that joke i laughed for hours