tap the nail GENTLY into your friend's ear

CONCERT ETIQUETTE states that if you need to talk to your friend at a loud concert, don't scream, don't shout, and no, you're not that good at lip reading despite what you might think (try mouthing "island view" to the bouncer sometime).

what you do is lean in real close and talk real soft. like a pair of headphones. close and quiet. WHISPER. if the person can't hear you, whisper a little louder. it doesn't take much, and it will never hurt your friends' ears. leave the eardrum busting to the shitty band you paid $3 to see with no drink specials at the bar.

BOOO screaming in your friend's ear

HOORAY BEER!