Hello, timeforthis...

Bog art was enjoyed by the bog artists of the Neolithic Age. And these artists were extremely wary of sharing their art with neolithic friends, relatives and other bog artists. They hid their bog art so well, that we yet to find a single example today. We art hysterians suspect that most of it has gone up in smoke. To bogart is, indeed, to keep one's future smokes to oneself.

Hope this helps,
Wordward