X Factor judge Robbie Williams discussed drug use with two fans during an Instagram live video.
The former Take That singer, 44, shared the broadcast on Wednesday with his 1.7 million Instagram followers.
In it, he answered a question from two men who said they were from Nottingham, asking, “Which gear should I be on?”.
Williams replied: “I know it is a gag, but are you talking like steroids, or speed or weed?”
Laughing, one of the men replied: “No it was cocaine… that is what we call it.”
Father of three Williams, who has been open about his previous battles with drink and drugs, said: “Oh I see… not for a long, long time.
“It has been a… look, I am 44 and when you get to 44 the heart can’t keep up with that shit. I have got kids.”
Williams then asked the men their age, to which one replied he was 20. The singer told him, “you’re good, carry on, have a great time, write it all down so you can have it in your memoirs”.
Williams, who is a judge on the X Factor alongside his wife, Ayda Field, then moved on to different alcoholic drinks.
He said: “Rum is great. Whisky is just f***ing weird. Rum is a lot of fun. Do you drink Drambuie?
“I mean not that you would ever take ecstasy, but it goes very well with ecstasy. Not that you ever would.”
Williams added: “Awful, don’t do it.”
A representative for Williams has been contacted for comment.