Where rainbows come from t-shirts

Where Rainbows Come From Stupid Sayings on T-shirts. Awful Gag Gifts and Silly shirts Do you know where rainbows come from? How are Rainbows Made? Can funny shirts and gag gifts, tell us the answer to Urban Myths? If Leprechauns are at the end of the rainbow. Unicorns' rear ends are at the beginning of the rainbow? I've heard the rumours that unicorns fart rainbows. I think that might be true. Because i don't know how such a beautiful display of light and magic, can come from nothing? If a Unicorn is mythical, and no one's seen the beginning of a rainbow.. Then by process of elimination, it's safe to say that Rainbows come from a Unicorn's fart. If you like Silly stupid t-shirts, grab a t-shirt with a unicorn farting a rainbow.