He nodded as he said it was. They began to talk about diving and swimming. The man called Ken did most of the talking. He said he wanted to show her a few things about her swimming stroke.
He jumped off the edge of the pool and swam across and then turned around and swam back. Everybody stopped what they were doing and watched him. When he clambered out he smiled in a very superior way.
"See what I mean? You've got to use your legs more."
"You splash too much," I said.
It was the only way I could think of at the moment to get into the conversation. But it got me in. Everybody was looking at me as though I were out of my mind. Ken sneered.
"Oh, I do?"
"Don't take it offensively," I said. "But you really do. Also your arm motion is not good."
He was so angry that it was almost funny. Now I was sorry I had spoken, because the girl might be a close friend of his and she might take offense.
"Maybe you would like to show me how it's done," Ken said hotly. "I could make it worth your while. Suppose we race two lengths. For ten dollars."