Well, all parents do at some point, I suspect, so it's possibly a little harsh to be so judgemental.
According to The Sun, Madonna has admitted that snogging Britney Spears during that MTV Awards show a few years back has made her daughter Lourdes ask difficult questions. Apparently Lourdes told her mother: "Mom, you know that they say you are gay?" Madonna apparently responded: "I am the mommy pop star and she is the baby pop star. I am kissing her to pass my energy on to her." I'm not sure if that's a better answer than "We did it to sell records and get a rise out of Justin Timberlake", but there you go. And didn't she kiss Christina Aguilera too?
Elsewhere, the Queen Of Pop has spoken out about Elton John, who recently accused the singer of cheating her fans by miming on stage. She told Out magazine: "He did send me a letter apologising for his last outburst, right before his wedding. But he seems to be angry. I seem to have become a target. It's not very gentlemanly or gracious."