Language For Email Confidentiality I Received An Email In A Strange Language?

I received an email in a strange language? - language for email confidentiality

Today, when I checked my e-mails, there was a stranger in a language I do not understand. The only word in English has been Yahoo. It was a picture of a man and a woman in bed with another monkey, and someone put something on the nose. What does this mean? I was not open, but after reading the e-mail before, it will automatically open. There are also many unusual this letter.

Can someone explain? Could a failure or a virus?