Whoever gets it is the King, or Queen, and has to pick their Queen, or King, and give them the gold crown.
When it happened to me I had no idea and everyone just stared at m. And then someone told me to pick a king. I didn't know who to pick or what the etiquette was? Should I pick the oldest man in the room, or a child to keep them happy? Shoudl I pick my boyfriend who I'd only just started seeing, was a twat and always going on about women just wanting to get married and have kids 
And no-one helped me. They just all stared at me and didn't giev me any advice. I said, I don't know what I am supposed to do, and they all laughed.
It was horrible. The next time I got the thing inside I swallowed it so I didn't have to go through it again
and still, twelve years on, I don't know what the etiquette is (unless you're two couple you pick your own OH).