The owner of a drugstore

The owner of a drugstore arrives at work to find a man leaning heavily against a wall.

The owner goes inside and asks his clerk what’s up.

“He wanted something for his cough, but I couldn’t find the cough syrup,” the clerk explains. “So I gave him a laxative and told him to take it all at once.”

“Laxatives won’t cure a cough, you idiot,” the owner shouts angrily.

“Sure it will,” the clerk says, pointing at the man leaning on the wall. “Look at him. He’s afraid to cough.”