On This Day in Pink History… 11th April 2007, Pink performed on American Idol
In 2007, Pink was due to perform U + Ur Hand on American Idol. However, because of the songs lyric content, Pink was asked to censor the lyrics. Who Knew was performed instead.
On This Day in Pink History... 
LOL. I’d love to know how you find out these things (the song switch). I’ve often said that the censored versions of P!nk’s songs are like an instrumental version. So many words are left out with pauses. Haha!