This was the hilarious moment a woman was sweeping the floor and an angry RAT started chasing her round in circles.

Thuy Say, 20, had been cleaning debris yesterday (Wed) from the concrete floor of the new building being built near her home in Hai Phong, Vietnam.

But the enormous black rat some 30cm long appeared and began ferociously JUMPING at her.

Thuy desperately tried to hit the rodent with the broom handle but it continued to dodge the blows and run after her.

The aggressive beast even had her cornered as it bared its teeth and leapt towards her as she cried for help.

But despite her distress, her boyfriend and friends found it hilarious and were laughing at her from the side of the wall.

Thuy, a student, tried to climb out but slipped back in and the rat began attacking her again.

She said: ‘’I don’t like rats so this was like a nightmare for me. It was so big and angry.

‘’I did not know that rats could jump so high. I couldn’t hit it because it was so fast and I couldn’t get out. I was crying but now when I watch the video it is funny.’’

Thuy eventually clambered out after her friends gave her a ‘leg up’ onto the wall and back onto the ground.

Friend, Hau Lu Hp, who was there during the incident, said: ''Everyone found it funny. People love to tease Thuy. Nobody wanted to help her out because it was funny.''