What is the meaning of Get_it?

Used other than figuratively or idiomatically: see get,‎ it.

To understand something; to catch on; to fully appreciate its implications.

To receive a negative thing: to receive punishment; to receive a retaliation; to receive a beating; to get what's coming to one; to feel someone's wrath.

To be struck (as an act of violence).

To have sex, especially referring to its possibility or eventuality.

Used to encourage someone, especially to indicate that someone is doing something well.

Do you understand? Have you heard? (after explaining or giving an order)

Used to draw attention to a pun or other joke one has made.

Source: wiktionary.org