Sure, you could squeeze into your old uniform every weekend while you're mowing your lawn to let your neighbors know how bad-ass you are. However, there are 2 issues with this approach, one is that the old jerseys were made of some sort of sweatshirt material that will definitely end in heat stroke, and you're too old to take that risk. The second issue is that those torn, tight shorts don't leave much to the imagination and it will be awkward when all of your neighbor's wives start showing up unannounced...
Why not stay safe and prevent some divorces by getting this super sweet double-sided flag instead. It's 3'x5', weatherproof, and has grommets so it can be proudly displayed in a multitude of ways!