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1 definition by princess hef

when you taken such a large crap it starts peeking up over the water in the toilet bowl, like the lock ness monster's head peeking out of the lock.
dude, i ate so much celery, beans, and popcorn that i started lock monstering when i took a shit. seriously, my crap was poking out of the water so much it nearly touched my ass.
by princess hef May 13, 2009