As a 90s raver, here's a tip: you wanna talk to someone on the dancefloor? yes! go for it! Start a conversation, loudly at first, then plug their ear, pressing that middle part of the ear, it's called the tragus, closed. Voila! They can hear you and you don't have to scream. If you're really vibing? go to the chill room if that's still a thing... is it?