big rimmed sunglasses that usually take up more than half of your face. stoner glasses are so dark that no-one can tell you are stoned. if you can see through the lenses, they aren't stoner glasses.
girl #1: oh man do i look stoned?
girl #2: totally, u better put on some stoner glasses.
girl #1: *puts on stoner glasses* great, now my parents won't notice.