There's a difference between dumb, (and childish) black out drunk and retarded while seemgly less drunk.
There's better way to give fan service. Makes me worried the author might be running out of ideas to drag on the reveal that's fated to only come right at the end of the story. I guess we'll have to count how many more time Miss Eatsalot shows up only to be wasted being a comic relief character to know for certain how far down the ol' barrel of ideas he is.