A holiday celebrated before St. Patricks Day, loosely based on State Patty's day. Created by Manhattan College alumni, the day has no offical relationship with the college. Day drinking starts at 9am and has no offical ending.
I blacked out and threw up on like 4 girls last Manhatty's Day
by charlesbarkley08 February 27, 2011
1 more definition
A Day of Days, A Day of Reckoning, A Day Of Mayhem, A Day that will live in Infamy
This weekend is Manhatty's Day, may god have mercy on our souls.
by PublicRelations February 20, 2011