Someone who is militant about correcting grammar mistakes. Evil. Usually has no friends.
Person one: "I ain't got no homework."
Person two: "Uh, actually it should be 'I don't have any homework.'"
Person one: "Dammit, quit being such a Prescriptibitch."
When a person's true personality can only be seen while they are on prescription drugs. Defined by having no personality what so ever when not intoxicated on prescribed narcotics.
She is boring most of the time, but when she pops her pills her prescriptionality shines bright.
This phrase was made famous by Christopher Walken in the SNL sketch "More Cowbell". He plays a famous record producer, who insists that Blue Oyster Cult increase the volume of the cowbell in their studio recording takes of "Don't Fear the Reaper".
Walken (as record producer): "I got a fever and the only prescription is more cowbell!"