The dripping of sweat from the ceiling, usually caused by an unventilated, extremely hot rave with numerous people.
"Dude i went into the drum n' base room and i felt drips liquid on my shoulder...rave rain is so gross!"
Condensation that drips from the walls and ceilings of a warehouse rave. Caused by the excessive amount of moist body heat and the generally cold, concrete walls of a warehouse.
The rave rain was so heavy, it formed puddles along the wall.