Twitter gets like 5 billion hits a second, and what better way to pay homage to arguably greatest social invention of the last few years (Twitter > Facebook?) than a Twitter t-shirt done up by San Franciso’s own Fatlace. The t-shirt features the signature “@” symbol with the Twitter mascot bird, designed by Fatlace founder Mark Arcenal and Rob Heppler. Pre-orders for both black (not shown) and white are going down now at Fatlace.com/Shop/Online.