New York Giants Owner Steve Tisch Spills Superstitious Secret

Giants owner Steve Tisch confessed his Super Bowl superstition on TMZ Live today ... saying he won't remove 5-week old nail polish from his toes because he's afraid it could sink his team.

Tisch says 5 weeks ago his young daughters painted his toenails red and blue ... and his team hasn't lost a game since -- so now he's afraid to remove the polish.

Tisch adds ... he's barely washed his feet since his girls shellacked him -- and he has no plans to clean up ... at least until after Sunday.