Recently I've noticed that quite a few native English speakers ask like "What does XYZ means?" instead of "What does XYZ mean?" (There's an
s at the end)
I know this is unacceptable in formal English, so I initially thought it was an outright typo. But I feel I keep seeing native English speakers use this pattern too often for a simple typo — maybe once a week or so, on Japanese Language Stack Exchange. (Here's the search results for
My question: "What does XYZ means?", "What does he says?", and so on... Are these really simple typing mistakes? Or are they actually used as slang, dialect, etc? Is this usage increasing somewhere?
PS: I'm sorry if this is a duplicate. It's really hard to search for a duplicate of this with the search box :-)