I tend to agree with your analysis, but would like to add that the rest of the biting kind of ruins the joke for me as it goes too far in that single direction.

I tend to agree with your analysis, but would like to add that the rest of the biting kind of ruins the joke for me as it goes too far in that single direction. Ending after the second bite (or a very short third) with a few unrelated jokes like the lack of skills in Excel macros would have made the piece better in my opinion.