Define Get With Meaning

to kiss or take part in touching, referring to two people who are not dating or have just started dating

to kiss wit sum tounge!

The act of intimately engaging with someone who isn't your partner.

To engage in sexual acts with

To be able to compete with, stand up to.

The verb GET is a synonym for to obtain. Right.
To GET GET would therefore mean to OBTAIN OBTAIN.
Now the verb GET GET is a slightly downgraded, less elderly offensive, and actively 007ish combination for GETTING SOMEONE or even, with the appropriate low rise intonation, GETTING LAID.

Now spread the gospel (when you're not get getting, that goes without saying.)

A positive statement to pump someone up like a cheerleader. To achieve a goal. Reinforcement on the repetitive notion to achieve maximal greatness at the task at hand.

Phrase encouraging whomever is listening to go ahead and move forward, doing whatever it is one is talking of doing without haste.

Getting in is before you do anything sexual or romantic, it's the getting close and talking before hand.

Get by = manage

When someone has to manage sth or a situation