hit someone for six

verb3

1. •
   To score six points against (a bowler) by hitting the ball over the boundary.
2. •
   (informal) To affect in a devastating way by some unexpected news.

   • When I heard about the accident, it hit me for six.
3. •
   (informal) To hit another person very hard.

   • When he swore at me again, I couldn't hold back. So, I hit him for six.