What’s a birthday party without a birthday cake? Costco sells round, sheet, and bar cakes. Fair warning: A half-sheet cake measuring 12 x 16 inches is more than enough to feed a party crowd.

“Things from my Costco themed birthday party that just makes sense,” reads the text on Pak’s TikTok which has garnered more than 3.5 million views in less than two days, with an additional 1 ...