The one day where cops can't arrest you for being in possession for marijuana.
Man 1: Hey guess what day it is?
Man 2: What?
Man 1: 4/20 bro!!
Man 2: Hell yeah bro!!
It was once said to be the most powerful weapon known to man until Ur Grandpa Apache Attack Helicopter came into play. Our Savior Shrek once used this in the death of Hitler. After the rise of the Lord Donald J. Trump Gaylord was forgotten and never to be used again.
Look at this fucking Gaylord.