GR translation: rum-smoky, dynamite man

[Mike Jing]

This sounds vaguely familiar, but I could be just imagining things.  Where is it from?

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> Date: Sat, 27 Aug 2011 04:10:51 -0400
> Subject: Re: GR translation: rum-smoky, dynamite man
> From: alicewellintown at gmail.com
> To: pynchon-l at waste.org
>
> > really bad kids would light them and flush them down the toilet at school
>
> And, walking down the hall with his girl, a good twenty feet from the
> john, where Tyrone Davis and Terrence Williams flushed a fist full of
> M-80s, when the American Standard water fountain burst from the tiled
> wall, porcelain shrapnel, sharp chunks like busted cue balls, sprayed
> white chips and shards as he took pulled her, like a couple in a Greek
> Easter dish dashing dance, down the hall to the locker they shared and
> picked pieces from her bloody cheeks. He swore revenge, but he knew
> that these niggers would only kick his ass. He was an Oreo. Not that
> most of them weren't part white or indian or chinese or mixed with
> some irish or jew, but he has a soft white center, sweet to females
> and licked by any nigger with attitude.