Who is Keyser Soze? Who is John Galt? How Many Licks Does It Take to Get To The Center of a Tootsie Pop? All of these pale in comparison to the ambiguity of Satoshi Nakamoto. We like to think that once upon a time, Satoshi donned corpse paint and has been touring incognito ever since.
Like a less illicit DB Cooper, Satoshi and his massive Bitcoin haul wander the wasteland with the packed up parachute that they used to escape from the plane/err fiat currency of which they found themselves dispossessed.
Why should you buy this shirt? First, you should buy it because what good is fiat going to be in the future anyway? Second, you should buy it because a google search for Bitcoin shirt shows the disparity between taste and motivation. Finally, you should buy it because it's just damn confusing to someone who doesn't know, and that tickles the sarcastic smart-ass that lives within your dark, cryptographically logged soul.
Wail in torment for the cursed fate of the world's economies and the notion that you've staked your claim to the digital gold that's mined in the silicon hills that surround you.