When the pupils become dilated to the point of no return; large amounts of marijuana and/or shrooms (Psilocybin mushrooms) induce provincial pupils
The eye becomes totally encompassed with black, the pupil
"Bro, your pupils are the size of fucking Ontario."
"Bro bro bro, those are fucking provincial pupils."
When someone's pupils dilate in an unusual way, it is called mydriasis. This may be caused by an injury, psychological factors, or when someone takes certain drugs or medications.
Doctors sometimes refer to more pronounced mydriasis, when the pupils are fixed and dilated, as "blown pupil." This condition can be a symptom of an injury to the brain from physical trauma or a stroke.
Pupils that are lager then normal from trauma is called Trauma pupils