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Participle version of 'namble', itself backformed from 'nambler'. To be in the way of, or actively engaged in molesting kids.
I'm a nambling man
I'm gonna namble your asshole
- Turbonegro / Anal Gestapo - The Midnight NAMBLA

Tut, look at the Telegraph. Looks like Janner's been caught nambling again.
by Lord Grimcock April 29, 2008