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, She then targets Greenbeard and shoots a fourth arrow with the Blazing Bowstring. The arrow hits the paralyzed goliath druid, setting a portion of his robes on fire.
DM: You can certain try it. You rush past one of the peasants, fear in their face, they're confused and looking around and you see there's mud and a little trickle of blood that's dried down their face. As you (darting noise) by, they go, (gasps) You don't pay too much mind to them.
Player: Acrobatics check?
DM: Make an acrobatics check.
Player: 30.
DM: 30. You manage to make it up to the top.
Player: Do I have an action left?
DM: No, you used your action.
Player: Action, action, bonus action with the hasted boots?
DM: Technically, you wouldn't be able to move at this point even, but I'm letting you do that. Usually your move, it's a little weird.
Player: Okay, so I'm outta gas.
DM: So yeah.
