legsalad's definitions
The act of sticking one's thumb between somebody else's butt cheeks and announcing "Log Jam!". This is not a sexual act, it is performed externally while the recipient is wearing pants. Best performed in front of other people.
Nick, standing behind Frank waiting in line at the cafeteria, jams his thumb up between Frank's butt cheeks and yells "Log jam!"
by legsalad January 17, 2011
Get the log jammug.