Jeffrey Rosenthal applied some statistical thinking to prove that mom-and-pop store owners had defrauded Ontario's Encore lottery.

It currently offers free express grocery delivery from neighbourhood mom-and-pop stores.

Mom-and-pop stores and people complaining about large retailers is one of them, he said.

But critics say it would wipe out indigenous mom-and-pop stores, causing massive unemployment and social unrest.

Big box stores have Black Friday, online retailers have Cyber Monday, and more recently, mom-and-pop stores have Small Business Saturday.