When a cadet at West Point becomes sexually aroused during a class or meeting in Lincoln Hall his/her erection is called a 'Lincoln Log'.
CDT X: "Have you seen those paintings in Lincoln Hall?"
CDT Y: "Yeah, dude. I go up to the second floor during class sometimes. There's one painting of a naked woman, it totally gives me a Lincoln Log."
CDT X: "Yeah, same. It's so sick when the instructors forget to lock the doors to Lincoln Hall. I can't tell you how many times I've gone in there and beat Navy."
CDT Y: "Yeah, dude. I go up to the second floor during class sometimes. There's one painting of a naked woman, it totally gives me a Lincoln Log."
CDT X: "Yeah, same. It's so sick when the instructors forget to lock the doors to Lincoln Hall. I can't tell you how many times I've gone in there and beat Navy."
by J Company, 5th Regiment March 6, 2013
Get the Lincoln Logmug. by booka1205 November 1, 2011
Get the Log Headmug. The best sexual position ever. The female lays on her back while three guys mount her. One guy sits on her and has sex with her vag, while one sits up and titty fucks her, and the last guy sits up and fucks her mouth.
"hey, what'd you do last night after you left the party?"
"Me, Jared, and Taylor, gave Sara the best ants on a log known to man-kind!"
"Me, Jared, and Taylor, gave Sara the best ants on a log known to man-kind!"
by taybaby da prince October 12, 2008
Get the Ants On A Logmug. 
Get the log rollingmug. A dump that has been put on hold during a particularly long stretch online. Usually interupting a long chat session or on-line game such as Warcraft or Second life.
Lou: "Just GO! Stop talking about how bad you have to go, just GO!"
Rick:"I'm about to uplevel, I don't want to log off right now!"
Rick:"I'm about to uplevel, I don't want to log off right now!"
by mo-yo December 29, 2006
Get the Log offmug. Swamp Logging is when you are at a country bar, or other country gathering and you have to settle for the opposite sex that appears they were pulled from the bottom of a swamp like an old log.
We knew it was going to be bad when Mike told us to check on him in the morning because it was getting close to closing and he needed to go swamp logging so he would not go home alone.
by the real dansouthern April 11, 2011
Get the Swamp Loggingmug. A monster turd so long it goes down the bend and still manages to poke out the water resembling the "lochness monster" photograph.
Mark txts his friend Neil and tells him... " i just had a massive shit there. It was a right logness monster"
by dj nemesis September 21, 2013
Get the Logness monstermug.