A married man was having an affair with his secretary. One day, 
their passions overcame them and they took off for her house, where they 
made passionate love all afternoon. Exhausted from the wild sex, they 
fell asleep, awakening around 8.00 p.m. As the man threw on his clothes, 
he told the woman to take his shoes outside and rub them through the 
grass and dirt. Mystified, she nonetheless complied. 

He slipped into his shoes and drove home. 
 
Where have you been!" demanded his wife when he entered the house. 
 
"Darling, I can't lie to you. I've been having an affair with my 
secretary, and we've been having sex all afternoon. I fell asleep and 
didn't wake up until 8.00 p.m." 
 
The wife glanced down at his shoes and said, "You lying bastard! 
You've been playing golf!!"