"It's 4:20 somewhere" with a weed design is a playful and lighthearted way to acknowledge the global nature of cannabis culture and the idea that it's always 4:20 somewhere in the world, which is often associated with a time to relax and enjoy marijuana. This phrase can be used on various items like t-shirts, posters, or social media posts to connect with fellow enthusiasts and celebrate the communal aspect of cannabis consumption.