[Roger Slater]

Brian, if you stop with "birth" in your example, the site I linked to gives the password a 100% security rating. To me this suggests one can use the couplets as a mnemonic device, but for simplicity sake it's often only necessary to use the first line of the couplet.

[Esther Murer]

Yes, I agree that a whole couplet is much too long. But we can play the game.... I came up with a five-letter word which, rendered in html, reads as a rhymed IT couplet.