A married woman entered a pharmacy, walked up to the pharmacist, looked straight into his eyes, and said, "I would like to buy some fast-killing poison for humans."

The bewildered pharmacist asked, "Why, what for?"

The woman replied, "I need it to poison my husband."

The pharmacist exclaimed, "That's immoral, unethical, and completely illegal! Absolutely not!"

The woman reached into her bag and pulled out a picture of her husband in bed with the pharmacist's wife.

The pharmacist looked at the picture and screamed, "Well, why didn't you tell me you had a prescription?!"