An idiot savant is a mentally defective person with an exceptional skill or talent in a special field, as a highly developed ability to play music or to solve complex mathematical problems mentally at great speed. Some indications of idiot savant are that one might be good in a special field but does dumb things at the same time.
Someone who is autistic but with a special talent or ability.
You must be referring to an autistic savant. Basically, its an autistic person who has savant syndrome.
And You Know Who You Are - 2012 Are You an Idiot Savant 1-15 was released on: USA: 15 September 2012
First, I suggest reading "Born on a Blue day" by Daniel Tammet. The author is Autistic Savant and the book is about his experience with the syndrome. A definition from MedicineNet.com is: Autistic savant: A person with autism who is exceptionally gifted in a specialized field. That field may, for example, be mathematics. The autistic savant may be able to do rapid, complex mental calculations. Or the field may be music. The autistic savant may be able to perform a entire piece of music after hearing it only once. The term "autistic savant" has replaced the old term "idiot savant," which is perjorative and imprecise. A savant (from the French savoir, to know) is a sage, a learned person.
Flo and Kay Lyman are identical twin autistic savant sisters. They have both autism and savantism. As is typical of savants, they have incredible memories.
Dean Savant's birth name is Dominick Savant.
There is such a thing as a so-called 'idiot savant'. Someone with Asperger's Syndrome might have, say, a good memory, high mathematical abilities, or artistic talent but be hopeless in other fields.
Doug Savant's birth name is Douglas Peter Savant.
Carlos Savant is 5' 6".
Doug Savant is 5' 10".
Idjit Savant was created in 1994.
Savant Young was born in 1976.