The college version of St. Patrick's Day celebrations/parties. It was originally started as a large-scale student party in the streets of San Luis Obispo, California by Cal Poly students.
"Do you have your borgs ready for st fratty's day?"
"This Saturday, 4 pm darty at White House for St Fratty's! You better pull up!" - random frat member
"This Saturday, 4 pm darty at White House for St Fratty's! You better pull up!" - random frat member
by acolleen May 08, 2025
by Richapple August 01, 2024
when a guy is acting like a douche or fuckboy, they are acting like a frat boy... therefore they are acting fratty
by thisbitchistoooocoolforschool December 21, 2016