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, Many of the townsfolk gathered at that square were immediately killed. The party, as well as a few other straggling survivors, ran away as both the gargantuan black and green dragons began to chase  them  down.
DM: Okay, the second attack is reload, third attack. Another grit point to try and take it down, go for it. Roll for the attack.
Player: 25.
DM: 25 hits. It rolled a three, that is 17.
Player: Drop, fucker!
DM: Terrible, terrible-- All right, so that will effectively reduce its speed, or its height, by what?
Player: Height by 20 feet? And I imagine that would throw it a bit.
DM: It might.
