To my knowledge I have had miracle whip on one occasion. A guy in Louisiana hired a friend and I to strip and refinish teak wood on his boat. On the first day of the job, his wife came out and brought us some sandwiches. She left shortly after;they had some sort of sweet crap that looked like mayonnaise on them that I suspect was the dreaded miracle whip.
We both hated the sandwiches, so we pitched them overboard in the vicinity of an alligator that had been hanging out all morning. He seemed to enjoy the miracle whip, but of course gators will eat roadkill and stuff, so I am not sure if that is a ringing endorsement.