Being ready to do something. Usually poised in the form of a question to see if someone is ready to go. It can also apply to being in the right mind set to go somewhere. Usually asked before a social function or get together.
"Hey man I can't wait for this party Are you logged in?"
"No man I need to take some shots then I'll be logged in"
by HobbyLover November 2, 2013
A term used to describe one expressing disproportionate levels of hatred for someone, often including wishing them physical harm, usually for perceived "crimes" that they are "guilty" of.
Anthony LoGatto was A-Logging Chris when he said, "What Saddam did in the Gulf War was potatoes to what Chris has done."
by SCE/S February 1, 2019
A very firm and large turd. Often the result of constipation that has caused several days worth of poo buildup. It can be very painful from stretching the hole much wider than normal. Other problems caused by logs can include getting stuck because of excessive thickness got one hanging and very extended times sitting on the toilet due to excessive length.
"Hey, what's taking so long in the toilet"?

"Sorry...I can't go any faster, I got this huge "Log" coming out and it's taking forever!!
by Mickeymysterious1 April 24, 2009
When you do a massive turd and then get off the toilet and cut the turd in half with your pee. It takes some skill. Usually a tradition passed from father to son. As made famous in the episode of south park reverse cow girl
Jon: I put my flannel shirt on to lay a massive turd and then cut that log in half with my pee.

James: wow man did your pappy teach you the tradition of logging? Will you pass it on to your son?
by JonnoR March 27, 2012
1. The male gentialia.

2. A children's toy produced by fictional company Blammo!
"Get off my log!"

"Action log, by Blammo!"
by El-Keter October 11, 2002
The act of when a man takes a huge dump in the toliet, then get up to urinate on the turd to cut it in half so it can flush down.
Sorry I was in the can for so long, I had to do a bit of logging to flush down the huge shit I took.
by Trollhunter March 15, 2012
To cockslap somebody, when you have a penis like a horse's.
She pretty much deserved a good logging after the horrible joke she told, but no one with enough viagra was around to do it.
by whorrorshow May 5, 2007