Ontario Provincial Police.
"You down with OPP?"
"Dude, they're cops."
An informal term for library, derived from the Spanish word biblioteca (which means library).
The term has nothing to do with the Holy Bible (save that the Bible is a book), and is etymololgically related to discotheque. Bibletheque is almost exclusively used by high school students taking Spanish classes, usually during or after their Spanish class.
Juan, Maria, let's go study in the Bibletheque.