A Chemist walks into his shop to find a man leaning against the wall.
“What’s wrong with him?” he asks his assistant.
“He came in for some cough syrup,” the assistant explains,
“but I couldn’t find any so I sold him a bottle of laxative instead.”
‘What!’ the Chemist says, horrified.
“You can’t treat a cough with laxative”
“Of course you can” the assistant declares.
“Just look at him – he’s far too scared to cough!”