The food with bugs one was hilarious, as if you can’t find or buy all kinds of bugs and simply drop them onto the food and take a picture. Pretty sure that’s one of the oldest free meal scams anyway.
Except that requires time, money, and forethought. This requires 3 seconds on your phone after the fact, and will probably look more realistic than most fake bugs out there.
I didn’t mean fake bugs. Just grab one from a window sill or buy them at a pet store, it’s pretty low effort. Doing it from your phone also limits the impact since you only have a picture and not a real bug in your food.