about Bottler Brown

<http://www.londonslang.com>

says:
\"bottle - courage, balls. eg \"he lost his bottle\", \"he bottled out\", \"he&#39;s
got a lot of bottle\". The most common explanation of this term is that it
comes from the Rhyming Slang &#39;bottle and glass&#39; - &#39;arse&#39;. ie. To loose ones
bottle, to loose ones arse (incontinence produced by fear).
bottler - someone who &#39;bottles&#39; out, see above.\"