Larry Clinton of Bessemer City, North Carolina, has expressed a wish for his ashes to be buried in a Duke's mayonnaise jar. This is a sentiment behind which we can get.
Not only is the the best sandwich in the universe crafted expressly with Duke's mayonnaise - it also is a source of intense regional pride and identity, as we expounded upon in a mayoni-festo a while back.
No one is agnostic when it comes to mayonnaise. Ketchup, mustard, relish - people may have their brand or recipe preferences, but rarely do those condiments elicit anything like the passionate partisanship or disgust that mayo does.
Go on - stroll up to a klatsch of co-workers or into the midst of a bar throng and say "mayonnaise." A few folks will just think you're being weird (and granted, you are), but take note of who physically recoils at the mention and who starts waxing rhapsodic about their favorite brand or recipe.