A nice, calm and respectable Girl went into the pharmacy, walked up to the pharmacist, looked straight into his eyes, and said, "I would like to buy some cyanide."
The pharmacist asked, "Why in the world do you need cyanide?"
The Girl replied, "I need it to poison my Lover."
The pharmacist's eye got big and he exclaimed, "Lord have mercy! I can't give you cyanide to kill your Lover. That's against the law! I'll lose my license!
They will throw both of us in jail! All kinds of bad things will happen. Absolutely not! You CANNOT have any cyanide!"
The Girl reached into her purse and pulled out a picture of her Lover in bed with the pharmacist's wife.
The pharmacist looked at the picture and replied, "Well now, that's different. You didn't tell me you had a prescription."