let your guard down to your teenager?

If your teenager suckerpunches you (verbally) right where it cuts deep, do you let them know that hurt? Or keep it to yourself so they cant turn around and use it against you again sometime?

Edit for clarity: It wasn't a roast, and (as far as I could tell, wasn't disrespectful) just an offhand comment that cut right down to the bone. I'm not asking if you guys would discipline, but rather if you guys would let your kid know that they really hurt you so you could have a learning moment, but risk exposing your weak spot? Also: this is a daughter, not a son...if it makes a difference.

Edit 2: thanks everyone for the input, I'm going to talk to her about it. She didn't mean to hurt but it'll be good for her to learn that sometimes things hurt people even if she didn't mean to.