Mule

Mrs. Mule and I were out in the pool last night. I was along the side, playing with the dog (who likes to watch us, but has no interest in swimming herself). All of a sudden, this hand reaches around and grabs my package. Mrs. Mule swam under water and approached in stealth. I was taken totally off guard. It was her undoing however. She had to hold her breath for a while to make the approach, so she was already out of air by the time she came up, and was trying to gasp and laugh at the same time..

"We don't stop playing because we get old. We get old because we stop playing."