person 1 :"Hey how are you?"
person 2: "eidnskjbdsfjdjfvufdb"
person 1:"what"
person 2 : "EIDNSKJBDSFJDJFVUFDB"
person 1 :"what"
person 2 :"I said eidnskjbdsfjdjfvufdb!"
person 1 :"ok fine"
Basically, the condition of having a photographic memory. Can also be used to describe any kind of advanced memory skill/abilty/condition (depending on the circumstances of attaining a photographic memory).
Eientei (永遠亭, literally House of Eternity) is the name of a large, old-fashioned Japanese mansion hidden deep within the Bamboo Forest of the Lost. It has hallways that lead out into the far reaches of the sky. Eientei is currently occupied by a large group. Kaguya Houraisan and Eirin Yagokoro have been hiding there since their exile from the Moon. Other occupants include rabbits—lots of them—all under the command of Tewi Inaba and Reisen Udongein Inaba, who protect Kaguya and Eirin from intruders. Every month on the night of the full moon, the residents of Eientei hold a Moon Festival (例月祭, Reigetsusai) offering mochi with medicinal herbs pounded into them. Making mochi is thus the main occupation of the Earth rabbits.
Those with this last name are some of the best people to ever live. Their heart is so big that sometimes it gets them in trouble. They are smart, humble, and kind. Never mess with an Einterz because they will destroy you physically or mentally. They can also out drink you any day of the week.
Eidetic means to have an extraordinary memory, like taking a snapshot of a long piece of text and being able to recite it word for word. Different to photographic memory, where it's more people just saying they can do it when they can't. Eidetic is the science; photographic is the myth.
People also tend to assume that being eidetic means you "cheat" in tests. If you are an Eidetiker (eidetic person) all I can say is get used to it. You know that game where there are ten objects on a tray, and it gets covered up after 30sec and you have to remember what was on there? We used to play that game in my family at Xmas but I was banned from playing it when I was 6 because my memory was better than anyone else's in the room, which made it unfair (apparently).
Person 1: Wow, how did you two remember that poem so quickly?
Conor: We're eidetic.
Person 1: Huh?
Ignorant Person 2: It just means they cheat on tests and use that as the excuse.
Imogen: Oh really? 3.1415926535897932384626... (continues to recite pi to 100 decimal places)