Showbiz
The singer told reporters that he had been "w**king and shooting heroin" when asked about his recent activities upon leaving an LA hotel.
He later joked to TMZ: "What else have I been doing? Just being nasty and having bum sex."
The 33-year-old's comments were aired on US television before the 10pm watershed, with added subtitles to help viewers understand his accent.
However, his friends insisted that Williams - who relocated to LA five years ago - was merely joking around and hopes viewers were not too offended.
A source said: "Robbie didn't realise they were going to air his comments on US TV. He was just being sarcastic and he is now worried Americans won't understand his sense of humour."
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