Are there any Japanese words for "deport" and "incest" that sound similar enough for a bird brain to confuse? In monster musume, Papi the Harpy confuses the word "deport" for "incest" a couple of times in the English subtitles. I could see "arrest" and "incest", but I am aware the work is not natively English, so jokes like that might come through a bit sideways. Is there a similar sounding pair of words for these two terms to explains Papi's malapropism?
In Japanese, "incest" is 近親相関 kinshin soukan, while "deport [to one's home country]" is 本国送還 hongoku soukan. These two terms are not similar enough for a reasonable human being to confuse. But for a birdbrain? I'd say it's plausible. 

The soukan in the two items are unrelated; they just happen to be homophones. 

(She makes this error twice in episode 2 - at 04:12 and 09:01.)