It's a fantasy role-playing game.

DM: You are Grog Strongjaw, a goliath barbarian . You are the member of the famous group of adventurers. Previously, The druid wishes him good luck as the rogue runs straight for Tylieri. He stabs the vampire three times in the side, first with the Flametongue Dagger, then the Keen Dagger, then the Flametongue again.
DM: I know. To look at you, reach up with the throat that he's grasped, and sink his fangs directly into your throat, Grog.
Player: (angry noise) I have a little collar. Does that help at all?
DM: Not in this moment. You have a big neck. Very big neck, and a very tiny collar.  That will be a 20 to hit?
Player: Yep.
DM: All righty. So you take nine points of piercing damage.
Player: Is that halved?
DM: That is halved. Yeah. So say five, round up.
Player: Sure.
DM: However, you do take 14 points of necrotic damage. That is not reduced. But your maximum hit points are now reduced by 14.
Player: Got it.
DM: As you feel that same similar cold feeling as the life blood's being drained out of your body and you see his eyes cresting at you with this wild glare. That ends your turn, Vax?
