I have one that does this but it actually has the map on it tooo!

I totally posted this on Facebook!... @chelsiesparks have you seen the shirt that Universal sells that does this?!

What! No?! I need that shirt! Like asap.

Look! The ink is sun-sensitive,

I don't know why but the marauders map is like one of my favorite things from HP, so this makes me very happy!