Fiddlestick

"The missing button on his shirt was a fiddlestick, he wore it anyway."

"The stain on his shirt was just a fiddlestick, he had more important things to worry about."

"The politician's excessive use of 'fiddlestick' during the debate made her seem less confident and articulate."

"After hearing the news, he stood there for a while, looking for a response, until finally saying 'fiddlestick' and walking away."

"It's not that I don't believe you, fiddlestick, but I need to hear more evidence before making a decision."