Before I can begin to tell you of my archenemy, the cakewich, I need to give you some background. A previous job of mine was with a non-profit. Although they were very conservative, non-profits in general seem to be more approachable places to work. This one was no exception, for weddings or babies, a shower was thrown by HR and everyone in the building was invited to attend.
Water chestnuts, because of the sentient nature and ability to survive underwater, are an archenemy. Celery however is clearly relegated to nemesis status. The crunch, the horror, the things it makes peanut butter and raisins do when no one is looking... it's involvement in tuna salad. The HORROR! THE HORROR!