lie down with dogs and wake up with fleas

Lie down with dogs and wake up with fleas is a phrase used when you want to make a point to someone that they should be cautious of the company they keep. While dogs may seem a certain way and you want to lay down with them, you should be aware of the consequences of this action. In life, this means to avoid associating yourself with people who may not be what they seem or if you are following false assumptions about these people.