McChassy 

an enforcement of the word chassy

don't be a McChassy

McChassy by Sarah March 4, 2004

McClassy 

4 girls who party and are awesome. hated by many, feared by all. there the shit.

last night i went to this awesome party and these 4 girls were the life of it all. there obviously mcclassys.

McClassy by GetPowneddd October 30, 2010