Hmm, mayo struck a chord.
I don't really like creamy foods, in general, and am equally repelled by ranch dressing and white clam chowder. Even semi-creamy tomato soup kind of grosses me out.
When confronted by burger or sandwich that has been mayoed, I try to remain calm, remove offensive white material with napkins, and store these napkins out of sight. I can tolerate the traces of mayo left over.
That is so cool about your friend and The Feelies! I've seen them live close to ten times.