give (someone) a dose/taste of (their) own medicine

to do the same bad thing to someone that they have often done to you, in order to show them how unpleasant it is.

She's always turning up late for me so I thought I'd give her a taste of her own medicine and see how she likes it.

• sackcloth and ashes
• sack out
• sacred cow
• sacrifice on the altar of
• sacrifice on the altar of something
• sacrifice something on the altar of
• sacrifice something on the altar of something
• sadder but wiser
• saddle someone with
• saddle someone with something
• saddle something with
• saddle something with something
• saddle with
• saddle with something
• sad state of affairs
• safe and sound
• safe bet
• safe pair of hands
• safety in numbers
• safety net
• safety valve
• sail close to the wind
• sail into
• sail into something
• sail into somewhere