Riddle: Chuck, a bestselling author of romantic fiction, had suspected for some time that his wife Eva was unfaithful, though he had no proof. One afternoon, while Chuck was working on his latest bodice-ripper, Eva mentioned that she intended to go to the movies and would be out for a few hours. As Eva went to the door, Chuck looked at her pensively, then resumed his work. Three hours later, Eva returned, took her coat off and asked Chuck weather he wanted some coffee. When she returned from the kitchen, Chuck asked her to sit down as he wanted to talk to her.
"Eva," he said, "I want a divorce."
Can you figure out how he knew?
Answer: On Eva`s way out, Chuck had noticed a run in her stocking. When she went to the kitchen for coffee, he noticed that the run was on her right leg.