Like this. You accuse a vegetarian of eating a steak dinner.

There is a deep fake of the vegetarian eating a steak. The artificial intelligence shows a nice, juicy, steak being eaten by a vegetarian.

Turns out that the vegetarian was eating a Portobello mushroom, in the AI swaps the portobello mushroom out with a steak.

The vegetarian is surprised and righteously shocked that it showed him or her eating the steak. If the vegetarian wasn't doing what they were supposed to be doing, then the vegetarian would be afraid that he or she got found out.