The pair are said to have been on board John's boat when they came across Cowell's rented liner in St Tropez on the French Riviera.


© PA Images
According to The Sun, Walliams shouted across to Cowell: "I've got something for you."
The comedian then proceeded to bear his bottom at his Britain's Got Talent colleague, followed closely by John.
He then blew a kiss to the music mogul, adding: "Love you Simon."
Cowell's boat was reportedly ten times bigger than John's, but the singer-songwriter is said to have made it clear that his was owned rather than rented.
Sir Elton John recently sued The Times over an article that linked him to a tax avoidance scheme.
Cowell is said to have dismissed chances of returning to the UK X Factor due to the amount of jet lag he would receive.





