crash hot

adjective2

1. •
   (Australia, slang) Very good, excellent; very well.

   • Well well well, don′t you look crash hot in your new sunnies?
   • I'm sorry, boss. I can′t come in to work today: I′m not feeling too crash hot.
2. •
   (Australia, slang) Excellent; superb.

   • If she wanted me to be filming 24–7 then she wasn't setting a crash-hot example. — 2012