Just in case:
Bukowski explains the phrase in a 1963 letter to John William Corrington as follows: 'Somebody at one of these places ... asked me: "What do you do? How do you write, create?" You don't, I told them. You don't try. That's very important: not to try, either for Cadillacs, creation or immortality. You wait, and if nothing happens, you wait some more. It's like a bug high on the wall. You wait for it to come to you. When it gets close enough you reach out, slap out and kill it. Or if you like its looks you make a pet out of it.