Thou wilt not ring upon the rhino's pelt

In wanton sport. But there—why put a damper

On thy young spirits by recounting what

Africa is but Regent's Park is not.

It would but grieve thee, and, moreover, I

Note that thy young attention's growing looser.

A piece of cake? O fie! my Thomas, fie!

The keeper said, "Please not to feed the gnu, Sir."

And yet it seems a shame to pass thee by

Without some slight confectionery douceur;