A concert, house show, party, or similar occasion when a group of "scenesters" can be found trying to outcool each other. Often the attire of those at these functions includes a black t-shirt, which may have a band logo, skull, or something else retarded printed on it.
person 1:Do you remember that hardcore show?
person 2: Yeah, fucking black t-shirt convention.
by Briskit May 25, 2008
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