We think Liam means "imaginary friend"

Liam Gallagher seems to be suggesting that John Lennon was his imaginary friend, but then appears to back pedal impressively:

"I wouldn't say that he visits me [but] I had an out-of-body experience [with him] when I was about 17 or 16, and, as far as I'm concerned, that's when I started getting into music," Gallagher told Spinner.com.

"That's when it all started going down, and I reckon it has something to do with him. He don't come and visit me - at least, I don't think he does. I wish he did."

Imaginary friend. Or possibly something to do with drugs. We like the way that Liam's not entirely sure if he's being visited by the ghost of Lennon, though - presumably it's hard to tell who's there when Elvis and the Big Bopper call round with their mates.