Wiktionary
mom and pop
n. A small business, often but not always owned or operated by a family.
Usage examples of "mom and pop".
She had been required to stand up to Philip for the decade and a half when they had skulked from neighborhood to neighborhood until returning to within two blocks of the house on Auer Avenue where Timothy and Philip were born to Mom and Pop Underhill.
Moreover, said publisher cannot even open a ZShop (Amazon's version of mom and pop store).
Not quite enough to alert his father that's he stealing from Mom and Pop.