A US driver was shocked to see a woman changing what appeared to be her diaper at a McDonald’s drive-through in New York City.

Footage captured yesterday (May 8) shows the woman swapping what the driver described as a 'used diaper' as she hangs out the side of a minivan parked at the drive-through in Coney Island, Brooklyn.

The filmer said: "I was trying to figure out why the car had its side door open and why it was moving with someone looking to get out then I realized what she was doing.

"I’ve never seen anything like this in my life.''