Julia, a 14 year old teenage girl walked into the Magic Shop. She Spotted a bottle and the sign said "This Potion Gives You Invisibility!". She found the old man that ran the shop and asked him what this meant. He said "Young lady, this potion will give invisibility to anything." Julia asked, "Is there any way to be visible again?" the man explained that water would counter the affects of the potion.
So Julia picked up the potion and paid for it. As she walked out, the old man warned "Be careful! Your life could be ruined for ever!" Julia realized that if it WAS real, she could do anything she wanted! If it wasn't real, however, she had just wasted her money.