STOCKTON, Calif. -- Nothing hits the spot like a milkshake — unless, of course, there's a stranger's backwash in there.

A DoorDash driver was caught on a home security camera taking a sip of a milkshake seconds before delivering it, KXTL reports.

It happened to a family in California.

KTXL reports 14-year-old Rajesh Malhotra ordered a cookies and cream milkshake from Cold Stone Creamery for delivery.

"I felt really disgusted," Rajesh told KTXL.

The family didn’t see the video until the next day.

Of course, by that time, Rajesh had already drank the milkshake.

The family said they have reached out to DoorDash multiple times, but have yet to hear back.