Leigh Conner said the ordeal happened at about 6:30 a.m. last Thursday on Dean Street between Brooklyn Avenue and Kingston Avenue in Brooklyn's Crown Heights neighborhood.
RELATED: Tiny hamster dresses at 'Pizza Rat' for Halloween
"I was getting on my bike and saw a trash bag moving, seemingly on its own," Conner said. "When I saw that it was being moved by a rat I started filming."
The video, which she titled "Pizza rat strikes again!" and can be seen in the player above, shows it all happen -- a large rat drags the trash bag across the sidewalk. When it can go no farther, the rat grabs what appears to be a pizza (or other round food) and goes into a hole in the ground.
"After standing there for a minute with my jaw dropped, I realized I had to film it," Conner said. "It was funny, because I had a conversation about pizza rat just the night before, making it an especially strange sighting."
The man who owns the nearby house where the rat went underground said rats are a huge problem in the area. He said he patched up that particular hole Monday morning.
Click here for a look at more viral videos!