"Get on out of here, you"

I'm watching a sitcom, 'Friends'.

Chandler, who found it uncomfortable to get smacked in the bottom from his boss asks him not to. So the boss no longer does that to Chandler
However, seeing all his co-workers get smacked just like he used to,
Chandler begins to think somewhat differently.

After a meeting is done, every worker gets smacked in their buttocks by the boss while leaving the office.

Now the boss says to Chandler,

"Everybody else got one and you want one too, don't you?"

Chandler responds with joy,

"Yes, yes, I do!."

Hitting Chandler's bottom again, the boss shouts out,

"Now get on out of here you!"

Chandler leaves the office with a smile all over his face.
----------------

It was funny.

BTW, the last sentence pricked up my ears.
I would've paid no attention to it had it been just

'Now get out of here you'

as I've heard of that hundreds of times.

But 'get ON out of here'?

Does 'on' here make a big differece?

I looked up my dictionary to find out 'get on out' in vain.

Is 'get on out of here' just another way of saying 'get out of here'
making little difference?

I'd love to hear your tips, please.
Thanks for reading.