I saw this down an alley in Surry Hills this morning, and had to laugh - not just because of the three different pens used, or the language, but because it took me a good minute or two to realise it was written on a bag from a shop called Witchery.  That's not part of the note, but it reads like it is...here's an iPhone close-up of the full text.

Nice.  Heed the warming, beware the witchery!