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 party completed the venture of taking the Horn of Orcus to a place of safety and sealing it away, hopefully for eternity, with the help of Lady Kima and two of the Scalebearers. After heading to the basement of the Platinum Sanctuary in the city of Vasselheim, they succeeded in doing so.
DM: There you are. A gracious warrior of the woods. While on the ground, he reaches forward and attempts to sweep your legs out from under you. Go ahead and make-- this would be an acrobatics-- no, we'll make this a dexterity saving throw. Why not?
Player: Ten.
DM: Ten. (whoosh) Pulls your legs out from under you, slams you onto your back. As he leaps up on top of you immediately and with both of his fists in the air slams them down towards your face. That's going to be a 22.
Player: What?
DM: 22 to hit. You take six points of damage.
Player: Oh, good.  I was thinking 22 points of damage!
DM: And a 23 to hit, it's going to be an additional eight points of damage. Just once down on your face, and again with a second slam, right down onto the front of the face again. You can taste all the irony blood and liquid pouring through your sinuses down into the back of your throat as you're currently on the ground with him on top of you. You're both looking pretty rough. Where are you at, hit point-wise?
Player: I say, tastes like home. And I spit in his face and reach up and thunderclap both of his ears.
DM: All right, go ahead and roll for attack.
Player: 24.
DM: Hits.
Player: 17.
DM: 17 does not hit.
Player: 22.
DM: 22 does hit. So you reach up. Go ahead and roll damage.
Player: Oh yeah, right.
DM: (whack) Thunderclap to the side of both his ears.
Player: Six.
DM: Six points of damage. As he rears back and instinctively his hands go up and try and grab at your wrists, you pull the wrists back, and he's holding you from that point. You attempt to go for another strike, but he just redirects it with his own arms. You manage to pull out of the grip with a third strike. What are you doing for that one?
Player: He pulled away from my wrists, and I'll give him a little of the same. Put my fists together and just swing straight down into his solar plexus since he's sitting on top of me.
DM: Roll damage.
Player: That's a five.
DM: Five. (wham) You hit and you hear the wind out of him from the impact, (wheezes) and he's trying to get the wind back.
Player: I can't hear you. What?
DM: He pushes off of your chest to stand up for a second and (gasps) gets one big inhale of air, and as he does, he reaches up his leg and then tries to curb-stomp kick you right in the stomach while you're still on the ground. That will be 18.
Player: Misses!
DM: All right. A 19.
Player: Misses!
DM: And that will be a 24.
