It's a fantasy role-playing game.

DM: You are Tiberius Stormwind, a dragonborn sorcerer . You are the member of the famous group of adventurers. Previously, The party, after essentially forcing this individual to reveal themself, the rakshasa fled through a tunnel underneath its room into a long subterranean tunnel fraught with traps that were set to protect it. The party managed to avoid these rather deftly until the steady decline of the hallway, combined with the increasing moisture and scent of refuse, caused a slick surface and our fantastic cleric, Brother Kash, Kashaw, slipped and fell down.
DM: 22. Okay, so you pull off and away. You can see where it dragged across your scales, it left this nasty trail of black-- whatever you would call it, saliva-- but you manage to slip it off your hand, and you feel like it's probably not going to bother you too much. However, as you steady yourself, one of the tentacles comes swinging down towards you. That is also with disadvantage. That would be a 21 to hit.
Player: Yeah, that hits.
DM: All right. You take seven points of bludgeoning damage from the impact. That's only four points of piercing damage as the spines slam into your side and seem to stick onto you. You are also considered grappled and restrained for the time, as the tentacle wraps around you and the spines are digging into your body. It now has you by your waist and is holding you in place.
Player: This is fun. How much damage is that, total?
DM: That'd be a total of 11 damage.
Player: Really? Plus the other damage?
DM: Plus the bite, no. Did you not write down the bite damage I told you?
Player: That's 16, so 26? 27. So what's half of that?
DM: Half of that?
Player: Because of the Stoneskin. My Stoneskin is still up.
DM: Stoneskin is still up. That is correct. How long does that last?
Player: Hour?
DM: Hour. Yeah, that should've lasted long enough. You're fine, yeah. So half of that would've been--
Player: I cast that when we were chasing him--
DM: Yeah. 13 points of damage.
Player: Okay. 13 points.
DM: That was a lot of technicality in one turn. Well done, Tiberius. All right.
