‘malapropism’ and ‘portmanteau’.
“Haha, now that’s a malamanteau.”
“Don’t tell me you haven’t seen xkcd.com/739 yet!”
A neologism for a portmanteau created by incorrectly combining a malapropism with a neologism. It is itself a neologism, a malapropism and a portmanteau (of malapropism and portmanteau).
Someone explains his inability to talk while being upset by saying he was “flustrated.”
A meaningful malamanteau is “ambiviolent,” as in: “Beatrix Kiddo in Kill Bill was ambiviolent. She didn’t know who to kill first.”
George W. Bush’s inadvertent malamanteau “misunderestimated” has entered common usage.
Someone describes being misinformed as “being miscommunicado”, a mixture of miscommunicate and incommunicado.
The discussion in the wikipedia page for ‘Malamanteau’ is a “Wikibroidery” (Wikibroglio)