Not only is Robbie Williams jealous over the fantastic crazy things Britney is getting up to (he cannot copy her though), he is a mommy's boy too!
Yes, Robbie pulling your tongue out on TV and at as many passers by as you possibly can will get you branded as "YOU NEED REHAB" and not enhance your music career in the least.
Robbie Williams is reported to have left rehab into the care of his adoring mother as he cannot cope with the lack on publicity any longer. He was known to throw a tantrum and hurled his phone at a photographer who was taking a picture of a flying pigeon at the time and had ignored him completely.
Maybe you should try to committ suicide and hang a sheet out your bedroom window and see if you get more publicity that way. Don't put it round you neck as it will chaff you and then you will need to be rushed off to the doctors surgery for some cream to heal your "MY LIFE SUCKS AT THE MOMENT - GET YOUR LIFE BACK ON TRACK BY DOING A 3 SECOND STINT IN REHAB" rash. Maybe you can use that as a title for your new album?