This is from RP that happened in Guild Wars 2, an MMORPG. We were trying to track down a magic fire rock for a ritual. We got to a volcano to see a fire imp flying off with our rock. After several failed attempts to kill the imp one of our party gets an idea.
Uko: “Wait everyone hold on”
Uko: “We could trade for it. I might have something it wants.”
Uko pulls out a bottle of wine and holds it out
DM (Me): *rolls for it* “Oh my god. You got a 20.”
The fire imp then proceeded to fly down and gently place the rock at Uko’s feet and grab hold of the bottle. It was even kind enough to be sure Uko had let go of the bottle before flying off. This ended up skipping past the boss fight and a good quarter of the event. We since decided that the bottle of wine was actually cinnamon whisky.