give (one) a dose of (one's) own medicine(redirected from give them a dose of their own medicine)
give (one) a dose of (one's) own medicine
To do something (usually unpleasant) to someone who usually acts in the same way. Bill is always excluding me from things, so I'm going to give him a dose of his own medicine and not invite him to my party. This team likes to play tough defense, so let's give them a dose of their own medicine and not give them any space to score.