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, Keyleth tries to dodge under the fiend as she runs back down the alleyway towards her friends, but he takes a swing at her with his large mace and hits her in the head. A burst of flame emerges from the weapon, dealing heavy damage and setting her hair alight.
DM: You might actually be able to do melee on this, looking at where she is. She wasn't quite that high, so you could actually make a melee attack.
Player: Really?!
DM: I was looking at her stand for her height, but that's just her--
Player: Can I make both my attacks reckless, Great Weapon Master attacks?
DM: You can, yes.
Player: 17. That is probably going to hit. That is a 30 on the first one. Nope, 25. Minus five. 25 on the first one.
DM: 25 hits.
Player: Okay. And that's a 27, minus five. 22.
DM: Both hit.
Player: Nice.
DM: This is going to be nasty. Actually, hold on. Was it 22?
Player: Yeah, 22 was the second one.
DM: Yeah, that's not going to matter. Okay, so it still hits. Go for it.
Player: That's the wrong dice. 28 plus ten is 38 for the first one.
DM: All righty.
Player: And the second one is (counting) 27. 37 for the second one.
DM: 37, whew. That's nasty. All righty, so two heavy hits as you rush up, using the boots. You leap onto the rooftop, coming down with your axe into two giant swings across the armored lady. Each hits her, and you see sparks fly and a bit of blood begin to seep from some of the wounds. Definitely taking a nice little chunk out of her.
