POP heart-throb Dougie Poynter has launched an Xrated attack on critic Louis Walsh for claiming his group McFly are faking it.
The X-Factor judge successfully managed Westlife and Boyzone, helping them clock up No 1 hits around the world.
But he recently claimed the new breed of guitar boy bands, including McFly and Busted, were not playing their instruments.
"They were holding guitars and I don't think they were plugged in most of the time," he said.
The astonishing outburst brought an equally blistering response from Dougie, who told the Sunday Mercury: "What a b*****d. That p****s me off.
"People like Tom and Danny in the band are so talented. How can Louis say we don't play our own instruments?
"They've been playing since they were six years old. They are incredible performers and writers."
And in a pop at Irish manager Louis' own groups, Dougie added: "He's obviously not used to bands who can play their own instruments and write their own music.
"He says there's no plugs leading from the guitars. Has he never heard of wireless leads? I don't think he knows about that.
"I'm shocked that he made these comments. We've met him before and he was really nice to us."
Music mogul Louis also criticised the image of the groups when he appeared on an ITV show titled The Truth About Boy Bands.
He said: "They're jumping round the stage with silly haircuts, trying to be American - I don't buy that.
"Behind closed doors in their hotels they get drunk, they take drugs, they let in groupies: they're guys."
But a shocked Dougie hit back: "What does he know? We're just really normal guys. We're nothing special.
"Anyway, I've got my dog Flea, who I spend a lot of time with."
McFly will play two Midland gigs as a warm-up to their winter nationwide tour - Wolverhampton's Civic Hall on September 27 and Telford International Centre on October 12.
The group then return to Birmingham's NEC on November 30 as part of the Arena tour.
Once the tour is over, Dougie plans to pass his driving test - after failing his last one for driving on the wrong side of the road.
"I nearly knocked over an old man who had a walking stick," he said. "Now I've got to wait a few months before I can do the test again.
"I've got a Holden Yute, in racing green, waiting for me in the garage. Hopefully I'll pass next time."
McFly release their next single, The Heart Never Lies, in November and a new album will be out next year.
For tickets to the Wolverhampton Civic Hall gig, call the Box Office on 0870 320 7000.
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