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."
A single man or woman that is of African descent that is floating in a pool or jacuzzi.
Hey Ray Ray, check out that Lincoln Log in the pool down there!"
A roll of pennies that is placed in ones ass
Guy: I need to go to the bank, I'm fresh out of Lincoln Logs
Large turd that emerges after constipation.
I ate some bran and took a laxative. The lone lincoln log clogged the toilet.
When a group of people deficate into ones toilet one on top of the other in a continuous fashion without flushing or the use of toilet paper.
When I returned to my home after a break, I was annoyed to see my roommates had lincoln logged my toilet while I was gone.
A piece of toast with a hole in the middle and an egg fried inside the hole.
Man, should I have toast or eggs for breakfast? Oh I know! I'll have a lincoln log!!
The sexual act of putting on a top hat, beard, and mole while taking a poo on the chest of your partner forming a small house.
Tyler gave Thiago a mean lincoln log last night.