Left image: The image shows a shoe. The old of price of the shoe which was $120 has been crossed of and the new price is just $54.99.
Right image: The image shows a part of the shoe, its new price and old, crossed off price and available sizes. The old price was $120 and the new price is $54.99. There are only 2 available sizes which are 35 and 47. These two sizes are the smallest and the largest respectively of all the available sizes.
The image is funny because while there is a big discount on the shoes inticing customer to buy them, the only available sizes are 35 and 47 which are the smalles and the largest meaning that a majority of the people can not buy the shoe because they won't fit.