When you feel like taking a dump, but then suddenly the urge disappears.
Man.. I just walked to the bathroom, turned out it was just a Ghost Log. I no longer need to shit!
A huge penis laying in your lap
"you ready to take this lap log!?"
When a girl shits in your mouth and you proceed to perform oral sex on her.
Wes: “Remember when I gave Rachael an Arizona Log Mover”
When you decide to do anal and she has a poo inside. You then enter her ass and the tip of your penis touches the poo
Dude, last night I was tipping the log