This woman was having an affair during the day while her husband was at work.
One day she was in bed with her boyfriend and she heard her husband's car pull in the driveway. She yelled at the boyfriend "Hurry! Grab your clothes and jump out the window; my husband is home early!"
The boyfriend looked out the window and said, "I can't jump out the window! It's raining like crazy out there and I'm naked!" She said, "If my husband catches us in here, he will kill both of us!" So the boyfriend grabbed his clothes and jumped out the window!
When he landed outside he was in the middle of a "running marathon," so he started to run along beside the others - only he was still in the nude, carrying his clothes over his arm.
One of the runners asked, "Do you always run in the nude?"
He answered, while gasping for breath, "Oh yes. It feels so free having the air blow over my skin while I'm running."
Another runner then asked the nude lover, "Do you always run carrying your clothes on your arm?"
The naked lover answered breathlessly, "Oh yes. That way I can get dressed at the end of the run and get in my car and just go straight home without a shower!"
The marathon runner then asked, "Do you always wear a condom when you run?"
The nude man answered, "Only if it's raining..."