The oboe is a three-foot ebony tube, topped by a double reed made from bamboo or plastic. The oboist has to blow into this device with all the strength that he has. The veins stand out on his temples, he gets red in the face, and sometimes becomes incontinent.
Over time, after playing too much oboe and with the constant vibration of the reed, he can go slightly nuts. This is a form of PTSD — post traumatic stress disorder. Oboe players tend to retire early from symphony orchestras.
I love it! And yes, he was being witty. :-)
I read it here.