Copied from Ann Lander's Column --

 Dear Ann Landers: When I read the letter about the woman who drove
everyone in the office crazy with her gum-cracking, I had the perfect
response. I don't know who wrote it, but here it is:

            Bucolic Bliss

 The gum-chewing student and cud-chewing cow

 Look quite alike, but they're different somehow.

 And what is the difference?  I see it all now.

 It's the intelligent look on the face of the cow.