when a guy shits horrizontal to a girl's vagina, then beats it down with his dick till it splits in 2 (causing the lumberjack effect).
its like when you get your dick caught in the microwave then turned on high. or when you forget to take out the dog and you get beat with a soap in a sock giving the Rusty Lumberjack effect.
by hopwood January 13, 2009