1 definition by M&Msmorelikesmarties

Fly

Northern Irish slang, meaning unfair, cruel/unkind or bigoted/stubborn.

Unfair or Cruel/unkind:
Teacher: Right, everyone is getting double homework this weekend!
Guy 1: That's so fly we don't even deserve it!

Bigoted/Stubborn:
Guy 1: Can I've a lend of your pencil?
Guy 2: No way it's mine!
Guy 1: Come on don't be fly!

by M&Msmorelikesmarties November 28, 2010