get it get it /gɛt ɪt/

verb

1. () Understand, usually after some initial difficulty  ( cotton on , get wise , latch on , tumble , twig , get onto , catch on , get it )
   understand, usually after some initial difficulty
    She didn't know what her classmates were plotting but finally caught on
   She didn't know what her classmates were plotting but finally caught on
   
2. () Receive punishment  ( get it )
   receive punishment
    You are going to get it!
   You are going to get it!