Especially as relates to sporting matches. The classic explanation was that they were frustrated as a multi-sport city that never won a championship, and the classic explanation of that was that their dual-sport stadium, Veterans Stadium, was AstroTurf right on concrete with practically no padding, so by the playoffs they were always hollowed by injuries (and took satisfaction in injuring rival stars instead). But the Vet was replaced by real grass stadiums and they claimed a Super Bowl and a World Series since then. No Stanley Cup, tho.