Technically an impossibility, as marijuana does not cause fatal, or even considerable damage in the short term (not counting injuries sustained while under the influence).
Commonly used as an often-misinterperated metaphorical arugment that if you have taken enough of a drug to have gone completely out of your gord, you've taken a "dose" more of it than you should have.
Willie the Pothead- "I feel sooo relaxed... Like, duuuude... woww... duuuude...."
A Well-Adjusted Pedestrian- "Willie just collapsed and pissed his pants in public: if you ask me, he's already overdosed. Drag him home so he can sleep it off in peace."
Which is kinda imposible becasue you would pass out after about 3 pounds to your face.
It would also cost about $681000 150 pounds of bad weed.
This is very possible when eating THC laced content (i.e brownies, cookies), rather than smoking it (you only get 10-15% of available THC when you smoke a blunt).
Side effects include increase in heart rate/ blood pressure, difficulty breathing, increase in body temperature, disorientation, nausea, decrease in muscle coordination.
Other more frightening, psychological/psychosomatic symptoms include hallucinations (i.e tunnel vision), paranoia or terror, panic attacks, loss of "self", loss of time perception, short-term memory loss, and slurred speech. It is important to seek medical attention if breathing becomes shallow and slow or if a person loses consciousness. Side effects also depend on the individual, the amount consumed, and an individual's tolerance level.