When one drops a large dump and it goes down the toilet pipe. When the person stands up and looks down, there is nothing in the toilet bowl.
Mark: "Wow Lisa, I couldn't believe it. I dropped the fat kid off at the pool and nothing was there."
Lisa: "Sounds like you had another phantom poop dear."
Mark: "Sweet. Let's have teh sex nao."
A massive poop is taken. On one wipe, the toilet paper shows no poop residue on it. Henceforth, the poop is phantom.
I could not believe I just took a phantom poop. It was like I didn't even go the paper was so clean!!!