Similar to a keg stand, 'the coffin' is performed by falling back into supporting arms while someone lifts your legs in the air. A third individual dispenses beer through the tap into person performing the act's mouth, arms must be crossed in corpse like manner to be considered the coffin.

When you eat dirt for the first time and leave your family to build a shack in the woods

When one lies motionless on top of another person while their sexual organs are interlinked.