Turns out, it was the dad’s idea to turn Mason’s birthday party into a full-on Costco extravaganza. “The party theme was pretty last minute, so it came together in about two weeks,” the mother explained. As the party was around Halloween, friends of the family kept sending them “memes of kids and dogs dressed up as Costco employees” as they all knew the father’s obsession with Costco/Kirkland. “My husband decided we should do a Costco theme for the birthday party,” Josie told Bored Panda, “it sounded completely absurd to me, so I immediately started bringing his vision to life”.