Variation of a well-known McDonald's sandwich, which, as a variation, replaces the usual tomato with rice. Thus the name.
Although a bit weird to eat (the rice often keeps falling off the sandwich), the result is deemed to be certainly original.
When McDonald's representatives were inquired about the origins of such a particular dish, they refused to make any comments.
A: I'll have a McDLR with fries, please.
B: Do you wanna supersize it for $2?
A: Supersize this, dood!