The story behind the 1977 Topps Star Wars # 207 C-3PO trading card (known as the “boner” card) is that a pissed-off Topps graphics designer decided to give C-3P0 a hard-on and a couple thousand copies of the card were produced and released to the public before the prank was discovered. Of course, the card is a collectible and you can buy one now on eBay for a mere 19 bucks.
Might make a nice gift for that Star Wars fan in your life.