When a duece is placed in a secret location to be discovered unintentionally later on. Generally considered an act of gratuitous depravity. Generally a time crapsule is left for a sufficient amount of time to allow the odor to fully disseminate into its new environment.
Some places one might discover a time crapsule could be a glovebox, a desk drawer, an attic, in a coffee mug, the freezer, etc.
Scott - "Dude, I think someone left a time crapsule in my room, but I have no idea where it might be."