Muscle Tussle

Muscle Tussle is a Warner Bros. Merrie Melodies theatrical cartoon short released in 1953, directed by Robert McKimson and featuring Daffy Duck.

Synopsis
Daffy goes to the beach with his girlfriend Melissa (voiced by Gladys Holland, an actress heard in United Productions of America's adaptation of Madeline, 1952), and wants to take her picture. While posing she sees a muscle-bound duck and turns her attention toward him. Daffy gets upset and tells the muscle-bound duck to get lost who replies that he'll bob Daffy so hard he'll have to open his vest to eat if he says one more word. Not intimidated Daffy challenges him to do so who replies by hitting Daffy that his head sinks into his stomach and in a daze orders "One cheeseburger, hold the onions". Melissa goes off with the muscle-bound duck saying goodbye to Daffy calling him a "scrawny little nine pound weakling" which offends Daffy as he's a "scrawny little ten pound weakling." Daffy tries to win back his girl and takes some muscle tonic which he thinks has made him as strong as the muscle-bound duck. Daffy repeatedly falls short in his attempts to demonstrate his strength, but through a fluke manages to get rid of his rival in the end.

Edited version

 * The ABC version of this cartoon cuts the part where the big, muscular duck pounds Daffy's head into his shirt.