John was a clerk in a small drugstore but he was not much of a salesman. He could never find the item the customer wanted. Bob, the owner, had had about enough and warned John that the next sale he missed would be his last! Just then, a man came in coughing and asked John for their best cough syrup. Remembering Bob's warning,he sold the man a box of Ex-lax and told him to take all of it at once. The customer did as John said and then walked outside and leaned against a lamp post. Bob had seen the whole thing and came over to ask John what had transpired. "He wanted something for his cough but I couldn't find the cough syrup so I substituted Ex-lax and told him to take it all at once.", John explained. "Ex-lax won't cure a cough!" Bob shouted angrily! "Oh, yes it will!",John replied,"Look at him......he's AFRAID to cough!"