It's a fantasy role-playing game.

DM: You are Vex Vex'ahlia, a half-elf ranger . You are the member of the famous group of adventurers. Previously, As the giant approaches, its smell overwhelms them and causes Vax to retch, blowing their cover. Scanlan casts Domination to bring it under his control before it can attack, but the spell wears off before you can finish tying it up.
DM: Go, go. Someone let Sam in! All right, so as this giant entity reaches over and is going to attempt to try and slam his fist down on top of you.
Player: Ah!
DM: That is going to be a 21.
Player: Against my AC?
DM: Against your armor class, yes.
Player: Oh no, that hits me!
DM: All right.
Player: That doesn't count.
DM: You take 14 points of bludgeoning damage, as the hand just slams down onto your sister.
