Green Day were shocked to discover they are secret fertility gods - a child was conceived during one of their concerts.
A couple had sex during a Green Day gig several years ago, and the woman later discovered she was pregnant.
And the American Idiot rockers are delighted to hear the child, who is now around eight years old, is a big fan of their music.
Drummer Tre Cool, says, "I heard these people had sex at our show a few years ago and they conceived a baby - now they're bringing the kid to see us, too.
"They said they were shagging at the back of one of our shows - around the time (album) Warning came out - and that kid is like eight or nine now."