Lol, I love this suitcase sticker, available from TheCheeky.com. Here's the official blurb from the company
Take a stand against monotonous travel with Suitcase Stickers. Designed to stick to anything, they will draw attention to your bag making it easily identifiable and sure to make you some new friends.
Caution: Some of these stickers may cause offense to airport and immigration staff. But you would have figured that out whilst enjoying those cavity searches.