Summer Holiday/Spain Day 3 Stay and watch

As I sat down, Harry had finally managed to get his whole hand into the hole he had come out of some six years earlier, while at the same time his sister was being licked out.

Bob caught hold of my arm. "I think we should leave them to it," he said. I got the message and stood up, reluctantly tearing my eyes away from the sex show.

What do you do?