What does Dilly Dilly mean? The once unique commercial series has become so overplayed, we decided to make a t-shirt out of it. That's right, this is the most mainstream t-shirt we've ever sold, and we're fine with that. Why? Because we just landed a deal with Bud Light. You will undoubtedly buy this Dark Blue Dilly Dilly t-shirt while we drown ourselves in Bud-easies. Sounds like a win-win for both of us. Dilly Dilly my friend.