I'm pulling out my "green weenie" from the 1960 season!
Sigh, I miss the days when the gunner, Bob Prince, used to announce the Bucco's games.
The Green Weenie doesn't go back that far in Pirate lore.
"During a 1966 game against Houston, Pirate trainer Danny Whelan screamed at Astros' pitcher Dave Giusti, "You're gonna walk him!" while waving a green rubber hot dog in the direction of the mound. Giusti, thus jinxed, indeed proceeded to walk the batter and eventually lose the game. Prince noticed this from the broadcast booth, and the next day he grilled Whelan about it on the air. And thereby the legend of the Green Weenie was born...."
(source)