The act of slurring and mumbling together, because you're either drunk or hate your phone job.
I called the sex-line but she was slumbling, so i wasted five dollars
by Squanque_pronounced_SKANK March 11, 2015
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A slurring mumble; combination of a slur and a mumble.
Mike (drunk) - "I don't got no fuckalin dick man. Ubbbabubbabula abimolo, man. Gave her da dicksauce!"

Dibba - "Speak english, you slumbling fuck!"

Mike - Sorry, I slumble a lot when I'm drunk.
by Steven A. Jab September 24, 2011
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