Writing 346, via Rayray

Coop H.S.
New Haven, Connecticut USA 06510
Women's restroom, 3rd floor

In the handicap stall, the right-hand corner by the door,

Suck my balls

And underneath it, in different handwriting,

If you have balls then why are you in the girl's bathroom?

I guess the person who wrote the reply hadn't been in Coop long enough to hear tales of "The Boom-Boom Room."