It's a fantasy role-playing game.

DM: You are Percival de Rolo, a human gunslinger . You are the member of the famous group of adventurers. Previously, He charges at the dire wolf with his greataxe and lands two hard-hitting blows, the beast wounded but growling with its fangs bared. Waking up from Grog's shout, the party finds themselves surprised and ambushed by more orcs and another that seems to be a half-ogre/half orc humanoid rushing towards Percy.
DM: Yeah, he does not make that. So you shoot, he gets knocked prone. As you shoot his foot out from under him, he stumbles to one knee and then you just kick out and push him onto his back. That's the first shot.
Player: And it does six points of damage-- I'm sorry, it does 12 points of damage plus three points of fire damage.
DM: Nice.
Player: And now my other shot. Marking that off. I'm going to shoot him while he's down.
DM: Okay.
Player: So, do I get a bonus to hit there?
DM: You have advantage because he's prone.
Player: Okay, I get advantage. So I'm actually using--
DM: He's right there in front of you and he's not able to really dodge effectively, so I'm going to give you advantage on this attack.
