Fiddlestick

"I'm not sure how to answer your question, fiddlestick, could you please rephrase it?"

"He carefully lit the fiddlestick and used it to light the candles on the table."

"The error in his speech was just a fiddlestick, he continued on with the presentation."

"The new employee seems to use 'um' and 'fiddlestick' a lot during their speeches."