Open the door

I walked into the room marked ‘RECEIVERS’. It took me about ten seconds to realize why it was called this.

There were about ten holes drilled in the walls, between the two rooms. Under each hole was a cushion and some nearby tissues, along with other useful items. There were five people at different positions in the room, all kneeling at a different hole, each sucking a cock that was coming from the other room. The ‘GIVERS’.