Meh. That's probably just a one-off mistake.
The bloke next to me at work frequently uses a new word I've never heard before: "couplefew." As in, "I think we've got a couplefew of those, if you need some."
A common mistake I see in gun articles is, "I am a big fan of this type holster," instead of "this type of holster."
Give me time, I'll give you all the grammar and spelling mistakes you need.