The double ghost poop is when you go to take a shit and there is nothing on the toilet paper when you wipe your ass, but further more there is also NOTHING IN THE BOWL.
1. The act of hiding in the bathroom, pretending to take a poop, while engaged in some non-poop related activity such as playing a game on your smartphone or surfing the internet.
2. Spending way more time than needed in the bathroom, playing games or some other waste of time on your phone.
3. Hiding in the bathroom pretending to take a poop in an attempt to avoid some other responsibility.
Hey team, I'm at work but I'm Ghost Pooping so I can get my clan rumble in before time is up.
What's taking Bob so long in the Bathroom? I bet he's ghost pooping and playing Fortnite.
My wife wants me to change the baby's diaper, so I'm ghost pooping instead.
The king of all poops, in which when one goes to wipe one's nether regions after letting one fly, one discovers much to one's surprise that THERE IS NOTHING ON THE PAPER. The single most satisfying bowel movement that man is capable of.