"Battletoads" was a notoriously difficult game for the Nintendo Entertainment System that released in 1991. Its controller-breaking difficulty made it the stuff of legends, and, 20 years later, a bit of a meme.
In 2011, 4chan users prank called the "Pawn Stars" pawn shop en masse, repeatedly asking if they had a copy of "Battletoads." Trolls then did the same thing to Gamestop.
So if you do indeed have an original copy of "Battletoads," you can sell it on eBay for around $129.