Something for your Cough

The pharmacist walks into the store to find a guy leaning heavily against a wall. He asks the blonde clerk
"What's with that guy over there by the wall?"
The blonde clerk responds: "Well, he came in here this morning to get something for his cough.
I couldn't find the cough syrup, so I gave him an entire bottle of laxative."
The pharmacist yells: "You idiot! You can't treat a cough with a Laxative!"
The blonde clerk responds, "Of course you can!
Look at him, he's afraid to cough."