The grandparents aren't alright. Throughout his career, Pete Townshend's famously profane mouth has often caused his admirers to smile, shake their heads and say, "That's just Pete being Pete." But now, it seems to have gotten him in trouble with a fan and his daughter.

At the Who's concert at the Copps Coliseum in Hamilton, Ontario on Tuesday (Feb. 19) a fan (whose name we removed from this story at his request) who brought his seven-year old daughter got an earful from the guitarist after she reportedly waved a sign she made that said, "Smash Your Guitar, Pete!"

Townshend, who hasn't destroyed an instrument onstage in decades, instead smashed the barrier of printable language. "Don't wave that sign," he said. "Just don't wave it at me. Don't bring your children [and] use them. I want to tell you two words, but I can't because you have a child on you."

He then clearly mouthed "F--- off." The video of the incident made waves on the internet.

The fan, who spent $300 for the two tickets, had turned his daughter on to the Who through multiple showings of their 1979 documentary, 'The Kids Are Alright.' Although he explained to her that the band doesn't do that anymore, she still made the sign in hopes that it would cause a return to Townshend's old stage antics. Instead, he came up with some new ones.

"I'd like him to know in some small way he broke a little girl's heart," the fan said. "Both she and I were huge fans of the band and now I'm left trying to explain to her that heroes are not infallible. Instead of being this joyous, momentous occasion, it turned into a sad, regrettable kind of incident."

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