A neologism for a portmanteau created by incorrectly combining a malapropism with a neologism. It is itself a portmanteau of 'malapropism' and 'portmanteau'.
> "That was textuous."
> "Haha, now that's a malamanteau."
> "A what?"
> "Don't tell me you haven't seen xkcd.com/739 yet!"