get it on

verb3

1. •
   (slang) To have sex.

   • I can see the sparks between us. Let's get it on, baby!
2. •
   (slang) To engage in a fight.

   • You want a piece of me? OK, let's get it on!.
3. •
   To hurry up; to get a move on; to start.

   • I need to get it on: there's not much time left.