Post a pic or two of your favorite pinball t-shirts, or of your pinball t-shirt collection.
How many have you got now?
To me, it's sort of like having pinball machines. At first you're like:
Hey, that's a cool pinball shirt. I might as well have a pinball t-shirt to wear at festivals/expos/tournaments/league night/etc.
Then, a couple years later, you find that one has now turned into several pinball related t-shirts.
I'll have to dig through my t-shirts to check, but I believe I've got about eight pinball t-shirts now.