When Frieda pretends to make a deal with the woman she thinks was paid by one of the "Little Debbie Killers" she asks for Oatmeal Cream Pies. Those have been Little Debbie products for decades.
When Alvarez is giving his speech regarding his 10-year anniversary at the prison he called the prison "linch-field" instead of "Litchfield."
Laura Prepon (Alex Vause) and Amanda Fuller (Badison Murphy) also worked together on That '70s Show (1998) as Donna Pinciotti and Tina Pinciotti respectively.