A 72-year-old US woman shocked with a stun gun when she dared a traffic policeman to use his Taser on her spoke about the incident today.

Police used a Taser gun on a deaf, mentally disabled man for failing to leave a shop’s bathroom in the latest controversial use of the stun gun in the US, it emerged today.

A horrified sheriff has spoken out after a 72-year-old woman who refused to sign a speeding ticket was stunned twice with a Taser gun after provoking a policeman.