Good Morning Britain anchor Richard Madeley has slammed American rapper, Nicki Minaj, following her recent claims surrounding the Covid-19 vaccines.The rapper has found herself at the centre of a feud between Boris Johnson and Professor Chris Whitty following her bizarre claims.However, Richard was less than impressed after Nicki whose real name is Onika took to Twitter, claiming a relative became impotent after receiving the coronavirus vaccination.Following her posts, England's chief medical officer Professor Chris Whitty said during a Downing Street press conference last night: "I regret to say, I think they know that they are peddling untruths but they still do it, in my view, they should be ashamed."Nicki, 38, posted a series of tweets.