It's a fantasy role-playing game.

DM: You are Vax Vax'ildan, a half-elf rogue . You are the member of the famous group of adventurers. Previously, Percy moves closer and tries to shoot, but his pepperbox misfires, the barrel itself popping off and hitting the ground. He gathers the pieces and backs into a corner to try and repair it.
DM: But that does not recharge its Lightning Breath. It's going to move here. It's going to go ahead and make two attacks. It's going to turn around and its head that's looking at you, now, after you stabbed it in the back.
Player: Yeah.
DM: Reaches down, its giant jaws open. You can see, like, this thick saliva that's coating its fangs, and it, with serpentine speed, bites at you.
Player: Hey, rogue's Evasion.
DM: That's going to be a 23 to hit.
Player: So, Uncanny Dodge, I can dodge for half damage, so it was a what to hit?
DM: 23.
Player: 23 hits, but I take half damage.
DM: All right.
