Three women walking down the street are stopped by a man doing a survey. He asks, "Ladies, would you mind telling me how you know if you've had a good night out?"
The first replies, "I come home, get into bed and if I lay there and tingle all over, I know that I had a good night."
The second one replies, "I come home, have a shower and a glass of wine, get into bed, and if I tingle all over, I know it was a good night."
The third one turns around and says, "If I get home, rip off me knickers, throw them against the wall, and they stick, then I know it was a good night!"