A taste/dose of your own medicine
Definition 1 of 1
Pro Tip 1/3Informal Idiom
This phrase is casual, often used among friends or in relaxed settings, not in formal situations. 
After losing in chess, he smiled and said, 'I guess this is a taste of my own medicine.'
Pro Tip 2/3Negative Experience
The phrase usually refers to an unpleasant experience, emphasizing fairness or irony. 
She finally got a dose of her own medicine when her sarcasm was turned against her.
Pro Tip 3/3Consequence-Driven
Use it when someone faces consequences directly linked to their actions. 
By not preparing for the test, he received a taste of his own medicine when he scored poorly.