This is from the Seattle Weekly's article describing the best moments in Bumbershoot (Seattle music festival) history:
Doug Cavarocchi: This little girl who looked to be about 8 years old walked up to Robbie Fulks and handed him a note that said, "I'm your biggest fan, I know all your songs. Can I please sing with you?" About halfway through the set, he brings her up, and they sing "Parallel Bars" togetherâ??she sings Kelly Willis' part. It was really great, right up till the endâ??I think he forgot that they end up cursing each other out. You could see on his face, like, "Oh, God, what's about to happen?" And the little girl, without blinking, sings, "That's 'cause you're an asshole." And he laughed so hard he actually fell over.