A man walks into a pharmacy

A man walks into a pharmacy and asks the pharmacist,

“May I have a bottle of arsenic, please?” She is shocked.

“Why would you want something like that?”

The man calmly tells her,

“I want to poison my unfaithful wife and her lover.”

The pharmacist is now horrified. She said, “I can not possibly give you that.

It is completely illegal and I would lose my license and be prosecuted for conspiracy and murder!”

At this point the man hands the pharmacist a photo of his unfaithful wife having lovemaking with the pharmacist’s husband.

She examines it then looks up at him.

“Oh. I didn’t know you had a prescription.”