bobby pop
n. adult beverage, usually meant to signify a malt-based, alcoholic beverage, such as beer. Derived from the common nickname for Robert, and the quaint idea that for people who drink beer all day, it's kind of like soda.
You wanna sneak down to the stock room and have a quick bobby pop with me? My shift is almost over and I wanna get started - tonight's open mic at the bowling alley.