The 75-year-old, real name Patricia Brooker, admitted that she never intended to join the cast of the ITV2 reality series.
"Mark started filming for the show and he kept talking about me to the producers and before I knew what was happening I was starring," she told the Daily Mail.
"I told him it would just be a one-off thing but I can't get out of it now. I can't go anywhere without getting recognised these days because of the fame."
She added: "I would never do anything like get a vajazzle! Some of the boys and girls do. A boy's one is called a pajazzle you know! But it's not for me."
Nanny Pat releases her autobiography Penny Sweets and Cobbled Streets: My East End Childhood today (August 16).