A woman walks into a pharmacy and asks the pharmacist for some arsenic.
He asks, “What for?”
She says, “I want to get rid of my husband.”
He says, “Sorry, I can’t do that.”
She then reaches into her handbag, pulls out a photo of her husband in bed with the pharmacist’s wife, and hands it to him.
He says, “You didn’t tell me you had a prescription…”