This is very much just a MY family thing. But most of my family members cannot stand when I eat kimchi in the house. I love it so I'm not going to stop but gosh, they get so grossed out.
It's a highly processed mayonnaise which they dilute with water and modified starch, then increase its volume by blowing nitrogen into the mix.
Fun fact:
It was invented during the Great Depression, for people who couldn't afford real mayonnaise.
And mayonnaise was allegedly invented during the Siege of Fort St Philip in the 7-Years-War, because real cream wasn't available.
So Miracle Whip is a poor man's version of a wartime alternative to whipped cream.