In a monastery in Wyoming, everyday before breakfast the Abbot would
chant "Good Morning, Good Morning"  and the monks would all chant
back "Good Morning, Good Morning."  There was only one problem with this
ritual, thought one monk; it was the stupidest thing he'd ever heard.

One morning he decided that he would get them all back and hopefully
stop this stupidity.  That morning he went to breakfast and as the
Abbot came in and chanted "Good Morning, Good Morning" and all the
monks, except one, chanted, "Good Morning, ..."  The irritated monk
chanted as loudly as he could, "Good Evening, Good Evening."

Hearing this, the Abbot stood and said, "Someone chanted evening!"