What happens if Trump decides to stay in the office after January 20th ?

His orders and signature will be meaningless

He'll be escorted out of the White House in handcuffs.

It won't be good for him. 
This baby-like behavior needs to stop, for the good of everyone.

It will be good because it means that he won.

It's not up to HIM. CHUMP got FIRED and HE indeed will "leave" the White House on or before 1/20/2021. TRUST ME,

He will be removed from the White House and escorted out . Same for his offspring and Jared . Let's hope it doesn't come to this as our country is in dire straights with the pandemic and it's ramifications for our economy and the last thing we need isTrump histrionics . 

"Decides"? Under what circumstances? Specifically. 

Well nothing. He will still be president 

He can use military coup to stay in power and military on his side instead turns against Biden forces and court decisions. 

What can libs and media do then? Absolutely nothing.

I hope that happens. 

And from thereon, Trump will be dressed in military uniform instead of the attire he has now.