An old but cute joke:

I ended up with an older woman at a club last night. She looked OK for a 57 -year-old. In fact, she wasn't too bad at all, and I found myself thinking that she probably had a hot daughter. We drank a bit, and had a bit of a snuggle, and she asked if I'd ever had a Sportsman's Double. 'What's that?' I asked 'It's a mother and daughter threesome,' she said. I said, 'No' - excitedly. We drank a bit more, and then she says that tonight was 'my lucky night'. I went back to her place. She put on the hall light and shouted upstairs: 'Mom, you still awake?