Fruit salad?
What is needed is an oyster out of its shell- and you can do this anywhere - pop the oyster into your handkerchief, sneeze very loudly and obviously into said handkerchief - pre briefed friend leans across and eats oyster! Used to use it to clear train compartments when they had them, and it really does work. You have to like oysters though!
Try it and post how you get on.
