Feeling sick? Can't sleep? Never fear! Order this officially licensed "Big Bang Theory" t-shirt and fall asleep the Sheldon Cooper way. The soft cotton tee features an adorable kitty cat on the front alongside the lyrics to Sheldon's special lullaby: "Soft kitty, warm kitty, little ball of fur, happy kitty, sleepy kitty, purr, purr, purr." It may not convince your hot neighbor to sing you to sleep, but it certainly can't hurt!