Welcome to my perfumed garden

I kid you not, writing has appeared, out of nowhere, on my bathroom wall - OK, it's kinda squiggly and I have no idea what, if anything (hey, maybe it's a winning lottery number?), it's trying to say, but  it most definitely wasn't there a couple of hours ago. I've racked my brains to work out some way it could've got there accidentally - you know, has something rubbed against the tiles...? But there's nothing. It's quite high - above my head height - on a wall that nothing routinely touches, and it appears to be in pencil.

Oh man. All I've done for the last twenty minutes is stare at it. It is so freaky. It is made of freak.