Elton John, Robbie Williams and Kylie Minogue went out for a night on London town.<br />As they left the nightclub, Kylie slipped and got her head stuck between the railings of the fence opposite the club.<br />Robbie decided to take full advantage of this and lifted up her skirt and gave her a good rear-ender.<br />"Its your turn now, Elton" grinned Robbie but Elton started crying.<br />Robbie asked "Why are you crying, Elton? What's wrong?"<br />Elton sobbed "I can't get my head between the railings!"