I was busting my a** to get to school..

[F4sT]

Hi all
What does " So while I was busting my as* to get to school, he was driving to here?!" means?
Thanks in advance.

 

[maxiogee]

I was 'striving very hard' to get to school - (I'd imagine that they ran all the way, while someone - who could have offered them a lift - drove).

To "bust one's a*s" is to really try!