It's a fantasy role-playing game.

DM: You are Fjord, a half-orc warlock . You are the member of the famous group of adventurers. Previously, Caduceus, Caleb, Jamedi, and Nott ran towards the stairs to the outside. Beau and Jester waited by the well for you.
DM: So nine. This burst of radiant energy inside-- (growling) There's bubbles that escape from its mouth. It's going to come forward and take two swipes at you, Fjord, with both of its serpent hands.
Player: Okay.
DM: All right. That is a 16 to hit.
Player: Misses.
DM: And a natural 20, but it has disadvantage because it's in water. That is still a 19 to hit.
Player: That hits.
DM: You do manage to take-- from one serpent, you just manage to glide out of the way in the middle of the water. The second one, that is four plus three, seven piercing damage, including ten points of poison damage.
Player: Fuck, ten poison?
DM: Yeah.
Player: Is it diluted by the water?
DM: Unfortunately, no, because it's straight from the fangs in your bloodstream. It surges pain in your chest. You also lose a bit of air instinctively from the pain. So, consider now, your air supply is halved.
Player: Okay. Is that half my Constitution modifier?
DM: Essentially, the DC is going higher when we start getting to that, depending on how long we're down here.
Player: Fuck, fuck, fuck, fuck!
DM: That ends his go. Now it's the two broodguards.
