Product Placement Blog ➞ Drinks & Non-Alcoholic BeveragesIris Cola in Seinfeld Season 2 Episode 12 “The Busboy” (1991)December 3, 2019 Sergey TV Show Hi! On Tuesday, December 3, I watched a TV Show and product placement was spotted: Iris Cola in Seinfeld Season 2 Episode 12 “The Busboy” (1991).