It's a day where the first thing you do when u wake up is start taking shots. Then u continue to be hammered for the full day. You must dress in 1920s apparel, so full suits. Ideally carry a normal day out then party all night till u pass out.
Benny: "why is Donnie drunk in a suit at 10am on campus?"
Charlie: "bro, Donnie is having a 1920s day."
by Ricky SD March 29, 2016
Get the 1920s Day mug.