It says:
"doant ener this Room No Gerls alowd monsds and aleayens and Gragrs lerck arownd."
I don't know what a Gragr is although I think I can work out the others are monsters and aliens. The aleayens and Gragrs were added in as an afterthought which explains the word order.
I'm not sure about the anti girl sentiment. Why do boys and girls hate each other until their hormones kick in? Little Girl (or Gerl) is ignoring the notice and still goes in the boys' room anyway. It results in screaming and shouting (and occasional violence) each time.
I love bedroom door notices, they seem to be a rite of passage in childhood. I think I need to write one we can put on our bedroom door, I just need some ideas. Clean ones.
