When you get so incredibly stoned that you actually become a part of the couch. It becomes impossible to move. Usually followed by playing grand theft auto, eating $20 worth of taco bell, singing the entire national anthem, getting lost for 2 hours in the Wal-mart parkinglot, stealing traffic cones and wearing them as hats, smoking another joint, listening to aqueous transmission by Incubus, eating a whole bag of doritos, drinking 5 gallons of kool-aid, and finally trying to watch all of Half Baked with out passing out.
When one has smokedcopious amounts of Marijuana and is unable to move from an absolute position of pure comfort.
I really wanted a cup of tea but had a severe case of couchlock
By Clarine
Couchlock
When you get a really strong body high and cannot get up off the couch, usually obtained when smoking indica weed.
"I smoked me some romulan last night and got a severe case of the couchlock"
By Lori
Couchlock
Experiencing the sensation of weighing over a gazilliontons. The physical forces required to move oneself under the effects of couchlock are astronomically inconceivable.