Three elderly ladies swim in the indoor pool.
After two hours, the first one gets out and the lifeguard praises her: "Great!"
She says: "Yes, I'm 70 years old and I was Irish champion in long-distance swimming".
After three hours the second comes out and proudly says to the lifeguard: "I'm 80 years old and was European champion in long-distance swimming!".
After 4 hours, the third one gets out and says: "I'm 90 years old..." -
"Yes, I know" says the lifeguard "and you were world champion in long-distance swimming!".
She replies: "No, I was a prostitute in Venice and made house calls."