What does Bustday bustday mean?

Bustday bustday meaning in Urban Dictionary

the afternoon you understand you do not have chance of winning your NCAA bracket unless the past seed inexplicably wins it all. Can turn march madness into march despair, but there's always the following year! A single day you understand your NCAA bracket is busted, and also you're probably not going to win the share unless in some way, a dual digit staff wins the title.