A tiny catholic school in riverhead new york. widley known for its not so spectacular sports teams and many rich white kids. the most commonly used word is the wrod "fake". Many of the students claim to be huge partyers when the only alcohol theyve ever had was the blood of christ. the school is run by a large asshole of a principal. all the kids drink in school and never get caught. public school kids hate the students because theyre gay, but mostly because the mercy students are much richer. The black population is slowly rising.
Guy #1: Hey did Mcgann-Mercy win yesterday?
Guy #2: No are you retarded?
by wildcherrydietpepsi April 29, 2012
Get the McGann-Mercy mug.