Daffy's Diner is a 1967 Warner Bros. Merrie Melodies cartoon directed by Robert McKimson.
[1] The short was released on January 21, 1967, and stars Daffy Duck and Speedy Gonzales.
However, one angry cat named El Supremo discovers the trick and demands a real mouseburger.
The mouse discovers his intentions and escapes to the desert, with Daffy in hot pursuit.
Finally, El Supremo demands his burger within two minutes, forcing Daffy to serve himself as a replacement.