I hafta look this one up again, but it was a quote of a music critic to a woman solo cellist:you have an instrument between your legs madam that could enthrall hundreds, and all you can do is sit there and scratch it!
And of course there was the time when I was between sets after playing And the Band Played Waltzing Matilda, and an officious member of the audience approached and informed me that Australia started as a penal colony, to which I replied, "yes but they have women there too nowadays".
CLB