Pittsburghese. A smashed-up version of "Did you eat yet?" Would not be notable other than for the fact that I've actually seen this phrase, written just this way, in local restaraunt advertisements surrounding Pittsburgh.
A hat, or toque that would be suitable for wear by Jeeti. They tend to possess gangster qualities. However, a Jeeti hat must also be functional, as Jeeti is wise. It must keep one's ears warm; a doo-rag would not suffice as a Jeeti hat.