january 1 Share definition Flag the coolest bitch in the world was born and if someone else was born in your year JANUARY 1ST IS OLDER BABY , if your born january 1st ur cooler than all your friends shit they’re born january 1st that means they’re really cool i wish i could be them january 1 by smartest kid on the block October 18, 2019 Get the january 1 mug.