Whenever asked a question she did not want to answer - or had no answer to, my good friend used to say as a bit of nonsense:
"Not I" said the mouse, waving his wooden leg.
I thought it was some mixed allusion to a nursery rhyme like 'Who Killed Cock Robin?" plus Moby Dick. I found the discusion when I went to use it in an email - wondering if it was anymore widespread in usage.
We both went to a girls boarding school in Brisbane in the 1980s and used to get attention from others in the dorm by saying "Friends, Romans Countrymen - lend me your ears. What's in the bag? Ears!" (from the play "Wipe the Blood Off my Toga"). It was similarly said in jest and has resonance with the patter in vaudeville acts.