a taste of own medicine

a taste of (one's) own medicine

An experience of the same harmful or unpleasant thing that one has inflicted on others; an attack in the same manner in which one attacks others. Doug is a bully—of course he won't like it when his victims fight back and give him a taste of his own medicine. This team likes to play rough, so let's go out there and give them a taste of their own medicine!
See also: medicine, of, own, taste

*a taste of one's own medicine

 and *a dose of one's own medicine
Fig. a sample of the unpleasantness that one has been giving other people. (Typically: get ~; have ~; give someone ~.) Now you see how it feels to have someone call you names! You are getting a taste of your own medicine! John, who is often rude and abrupt with people, was devastated when the teacher treated him rudely. He doesn't like having a dose of his own medicine.
See also: medicine, of, own, taste