What would you do in this situation?

Robert, my Uncle and Aunt, and I are eating at a local Italian Restaurant. I ordered Chicken Parmesan, Robert and Uncle had Pizza, and Brenda had Veal.
Well we're eating our before meal salads, when all of a sudden a giant fork is being directed from the people at the table behind my Uncle, to my Uncle's salad plate.
There is a obese women, middle aged, holding said fork, and is laughing with her friends, as she said "I'd just like a taste of what you're having".

What Would you do in this situation?

A.) "Ha ha I get it, an attempt at humor"
B.) Fume and let it ruin your dinner
C.) Ignore it until the end of your meal when you place said fork into the rectal area of the Middle-aged obese women.
D.) Say nothing and enjoy dinner, who really cares,