Mars Co.
The ad has a cinematic beginning, and a blink-or-you'll miss it cameo by Selena Gomez as a mafia chief's moll. In the spot, a black car pulls up at a castle where a luxurious banquet is being held. The mafia chief opens the trunk of the limo to address the victim inside. In Russian, he tells the sap that he's going to get chopped into little bits (and sprinkled on ice cream). The clueless M&M - who thinks he is a grocery delivery - has a hilarious response.
The ad was made by BBDO New York.