A Rotary Joke

There once was a man who loved learning and sharing random facts about animals. He was always spewing the most unimportant information such as:
"Did you know that the ostrich's brain is as big as its eye?"
"Did you know that the elephant cannot jump?"
One night, while his wife was working in the kitchen, he came up to her and said, "Did you know that lions can have intercourse up to twenty times in one day?"
Without turning around, she responded, "Well it's a good thing that you joined Rotary in that case."