A pensioner appeared to let loose at a woman and her son after they refused to offer her a seat on the bus.
Footage taken by a passenger showed a fiery row erupting on the bus in Barnet, North London following a disagreement over the priority seats.
Vinay Kumar Parbot, 31, who recorded the incident on his phone camera and , said he was boarding the bus on his way back home last Tuesday when he was greeted with the startling scene.
