It was clear that he expected his second participant later in the show to be around that age as well. However, while searching the crowd for someone to sing the final verse of slacker anthem "Longview," he found a kid that could not have been more than 10 with a sign asking specifically to sing that song with the band. Armstrong broke his ringmaster character asking the kid if he really truly knew the lyrics. Not only did the child know the lyrics, but he sang them convincingly. The irony of a youngster who has likely never done the act singing "When masturbation's lost it's fun, you're fucking lonely" was not lost on the band and Armstrong and bassist Mike Dirnt fell over laughing as they finished the song.
"That was pretty much the most memorable moment in my entire life," said Armstrong, who gave the kid one of his guitars at the end of the song. It was refreshing to see that for their entire arsenal of effective and well-curated crowd pleasers, that the greatest moment of the show had an element of spontaneity.
Full article at DCist.com: HERE