I was reading my local paper and was shocked that a local company was selling these "joke" suitcase stickers.
Where they were produced As quoted on the website:
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.
Thank god, they stopped production on them (as mentioned on their website); they're not funny at all!