A play on the word concerto, it means a certain shirt you wear to every concert or live show of music
My plain black shirt is my conshirto
A person who wears concert shirts all the time, for every occasion. "should be pronounced with an Italian accent, although, not absolutely necessary"
1."See that guy over there, he's the biggest conshirto I know. 2."I really like his 84 Van Halen shirt." 1." No way man, his Def Leppard T is the bomb." 2."Whatever!"