My Little Pony: Friendship is Magic - Image #246,803

And they get covered in tree sap afterwards. =P

"Psssst. Girls. I have cutie marks… You like cutie marks don't you girls? Of course you do, I can give you all cutie marks, but the thing is, I can only perform the spell in my basement… Down those stairs, through the metal door and to the left, I promise I'll be right behind you…"