A police officer sees a man driving around with a pickup truck full of penguins. He pulls the guy over and says, "You can't drive around with penguins in this town! Take them to the zoo immediately."
The guy obliges and drives away.
The next day, the officer sees the same guy driving around with the truck full of penguins again. This time, though, all the penguins are wearing sunglasses.
The police officer pulls the guy over and says, "I thought I told you to take these penguins to the zoo yesterday?"
The guy replies, "I did, and today I'm taking them to the beach."