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,  The group of adventurers, Vox Machina, had found themselves in the Feywild, intent on discovering another one of the Vestiges of the Divergence, one of the many artifacts that they hope will aid them in their struggle against Thordak the Cinder King and the rest of the Chroma Conclave. They've defeated two of the members, three still remain, Thordak being the seeming powerhouse head of that troupe.
DM: I don't think that's how it works. It's not like you hit a couple fingers and they drop a cup. This is a massive muscle currently clamped on you, trying to swallow you.
Player: I was hoping.
DM: I know. Sorry.
Player: Okay, in that case, I'm going to grab my sword and start hacking at him.
DM: Okay, so we'll say you use your bonus action to draw your weapon. It's right there by your side. You pull it out. Go ahead and make your attacks against the crocodile.
Player: Okay, that's a 15?
DM: 15 just barely hits.
