Today's advertising agencies could learn a thing or two from these retro athlete advertisements. For starters, the ads don't really have to make any sense. So, stop trying to make everything "make sense." Just have fun. It's also important to note that the athletes you're featuring in the ad don't necessarily need to have something in common with the product they're endorsing. Again, stop trying to make sense. Just do whatever. Athlete + whatever = just whatever. Do whatever you want. Once you follow these simple rules, you're guaranteed to have a pro athlete advertising memory that will last a lifetime, and therefore the product you are advertising will have a huge growth in sales.