Mothers-in-law

There was this mother-in-law, who had three sons-in-law: Thomas, Bert and Dick. She wanted to test them, before they could marry her three daughters. So she took Thomas for a walk to the park. As soon as they passed the lake, she jumped in and screamed for help. Thomas did not hesitate: he took off his shoes and his jacket and dived into the lake to rescue the mother of his soon to be wife. The next morning, a brand new Volkswagen was sitting in front of his house, a beautiful red ribbon around it. A card that accompanied the red ribbon said: Dear Thomas, you appear to be the perfect man for my daughter. Bless you. Thanks, your mother-in-law.
The next day, she asked Bert to go for a walk. As soon as she jumped into the lake, Bert dived in, right after her, without even taking off his shoes or worrying about his leather jacket. The next morning, he found a brand new Audi in front of his house, a beautiful red ribbon around it. A card that accompanied the red ribbon said: Dear Bert, you appear to be the perfect man for my daughter. Bless you. Thanks, your mother-in-law.
The third time, she invited Dick to go for a walk. And yes, she did it again. She jumped into the lake and screamed for help. But unfortunately, Dick didn't budge and he could care less... and the mother-in-law drowned...
The next day, a brand new Mercedes convertible was sitting in his car port, a beautiful red ribbon around it. A card that accompanied the red ribbon said: Dear Dick, you appear to be the perfect man for my daughter. Bless you. Thanks, your father-in-law...