A gift given to a friend whereby you buy a six-pack of beer, or some similar beverage, but drink one before you give it to them.
I was going to give Jeremy a five-pack of Pabst Blue Ribbon, but I hate PBR, so I got him Yuengling instead.
A group who's actions are very often the definition of standardized deviance.
When I couldn't find my teaching notes my first thought was, "Ugh, the fanny pack five struck again".