Weirdest food quirks you've encountered on a date?

So I’m a private investigator who loves a good glass of wine, and you pick up on some interesting habits in my line of work. But on a personal note, I went on a date recently where they dipped their french fries in mayonnaise and not just a little. It gave me pause, I’ll admit. What’s the strangest food preference you’ve ever come across with someone you were dating?