A person with the intellectual capacity of a rock, with an over-abundance of money; or someone with more money than brains. In the case of a younger person, the money usually derives from family wealth and not from personal hard work. Known traits of moronaires: their inability to show respect to fellow human beings and the Law, as well as their overdeveloped sense of entitlement. This manifests mostly during their attempts at driving vehicles of all descriptions on public roads.
Dubai is a magnet for moronaires from all over the world. A good example would be a rich high school graduate racing around in a Lamborghini or other super car, and lacking the common sense or respect for law to drive safely, thus crashing and causing a spectacular fireball soon thereafter.