Who is Teddy and Louise from Flash Fiction: Very Short Stories and what is their importance?

Friends of Teddy and Louise, a middle-aged married couple, are reminiscing about the time Teddy almost dies, or appears to be near death. Louise is in the kitchen washing dishes, when a pipe bursts under the sink and water is shooting everywhere. She panics and screams for Teddy. The friends laugh, thinking of Teddy trying to rush to the kitchen with his major-league beer belly leading the way. When Teddy arrives in the kitchen, he shouts at Louise to go downstairs and shut off the water.