One who is adept at smartitistics, or exhibits general smartitude. Can usually be distinguished by the use of big words, mad math skills, and typically some geeky association like physics clubs, chess clubs, or Nobel Laureates.
Linus (the smartitician): Whilst an evening of inebriated debauchery and possible altercations over ambrosial brews might prove gladdening, I must season myself tonight for the chess championship this weekend then complete my dissertation proving String Theory.
Noun. Humourless left-winger whose vocabulary is punctuated with Marxist dialectical jargon. From the fictitious character Dave Spart in Private Eye, a British satirical fortnightly.
A shartist is a person who has the grandiose delusion that they are a talented & legitimate artist, when infact they are nothing but a common shartist.
Keith Urban thinks his music makes him an artist, he ain't nothing but a shartist.