Where you have sex with a girl, and when she falls asleep, call some buddies over to help you shit on all for sides of the bed, so the next morning, she'll be trapped in a "log cabin" and can't get out of the bed.
"Dude! My girl's passed out, come over and help me build a log cabin for her."
Marshall: "The bitch just fell asleep after sex. Tha fuck."
Stuart: "She totally deserves to wake up in a log cabin."
The completely non homo act of stripping your bros down, getting them rock hard, and building a Lincoln-log-like cabin with your massive boners. Dude, it's totally not gay. What's wrong with a pile of erections? Nothing... No homo.
Scott: Alright guys! Its 10:30! Time to build a log cabin!
Jeff: Oh yes guys! I've been looking forward to this all night, I've had a boner for 5 hours!
A log cabin is when a girl takes on the maximum amount of boners all at once without any of them touching. Current scientific research show that the amount is 20.
Me:"19 of my friend and I just gave that chick a log cabin."
Mom: "That's nice, dear."