The Animated Pong Shirt
I'll pass. When it comes to "technical clothing" I prefer the Star Trek like suction-fit of Underarmor thermals. They keep you comfortable in varying climate, and instead of Pong, they show nipples[Source]
Digital Clock T-Shirt
And if the static display doesn’t fit your style you can select up to 8 different flashing patterns or even switch it to a stopwatch mode.[Source]
Finally the modern space age delivers a fully functioning graphic equalizer in a handy t-shirt format. Party like it's 2999 with the glowing display on the T-Qualizer that dynamically changes with any ambient sound or music.