The lesser known, Minor Traditions

Right of Personal Illusion: Thine elder looketh most distinguished in that bee costume/mismatched plaid ensemble/raver gear. Also, thine elder's dignity is enhanced by his chosen title of "Herring Prince". Thou shalt not snicker. Even behind thine hand.
Right of Boredom: Thine elder may give long speeches reminding thee of the obvious, and may hold eternal Primogen meetings, and thou must suck it up.
Right of Location, Location, Location: Thine elder may devise complicated deathtraps reminiscent of the lairs of Batman or Bond villains and require thee to attend Elysiums there.
Right of Concentric Circles: Thine elder is the most obvious target in the domain. If thou keepest thy mouth shut and thy head down, thou mayest well outlive the preternaturally geriatric nutcase.