Exploding Barrel
Noun.
A common find in a video game for creative fun.

An in-game object, in the form of a barrel, that when agitated by a player or NPC, will cause a damage dealing explosion.

This object is often cliched throughout the video game industry but does not detract from the fun of it.
Sam: Oh look! sarcasm An exploding barrel... How typical.
Tim: Dude, exploding barrels are amazing.
Sam: They're in every game!
Tim: Its a good thing too!