Glasses that do not contain prescribed lenses, usually found on the shelves of your local Dollar General. worn by women who want to look sophisticated or cop out of putting on make-up/doing hair.
"check her out, she is totally sporting flasses"
"those can't be real, they are deffin. flasses!"
Something that is very prison-like, Often a common item that can be made into a prison weapon.
"WOW, that melted pen is SHANKTASTIC!"