In the Chemists
A chemist walks into his shop to find a man leaning against the wall.
"What's wrong with him?"
"He came in for cough syrup, but I couldn't find any, so I sold him some laxatives."
"You can't treat a cough with laxatives!"
"Of course you can.
"What's wrong with him?"
"He came in for cough syrup, but I couldn't find any, so I sold him some laxatives."
"You can't treat a cough with laxatives!"
"Of course you can.
Spoiler: