if you're born on this day you're a fucking GOD like dude holy shit
you're a legend
Your friend : Hey dude? When's your birthday, i wanna make sure i get you a gift
You : Oh it's April 20th
Your friend : You're a fucking legend, my guy
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).