this is when you discriminate against a person for wearing glasses
dude1:she's cute, but she's got glasses...
Dude2:Your so glassist!
someone who discriminates against glass, someone who is irrationally and strongly opposed to glass
person1: yo u heard bout that chick fiona?
person2: yea man..shes a glassist
person3:...are u freal? man wat a loser
person1: wow what a freakin scrub
person2: yea bruh she crushed my dreams of a glass house
person3: i bet she eats oysters every day