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,  Some of them splintered off to try and acquire the goods that were taken from his store, however they apparently had already been stolen from the location they were being stored in, or been delivered already, they're uncertain as to what became of them. But they get the sense that it was probably best that they chose Gilmore over the gold, at first glance.
DM: All righty. So, as you rush around, you stab the wyvern on the back of its haunches and you see it shrieks in pain (screeches), looks over its shoulder and starts biting its tail, its stinger swinging about, but you avoid it, fling the other dagger to the side and then jam the other side of its haunches with your other hand. It's definitely aware of your presence now.
Player: Did I use up all my movement?
DM: Nope!
Player: Knowing that it can swat at me, I'm going to try to go right back around where I came from.
DM: All right.
Player: And I'm wearing the Cloak of Displacement.
DM: Okay. It's going to swing at you with disadvantage.
