Now, this didn’t happen in Montana (and according to this article, it isn’t the same story as the video), but who is to say it couldn’t have been a Montanan who was eating this semi-cooked squid? Don’t answer that. An interesting thing was reported back in 2012, which led to another report in 2016 (according to the video).
This is weird, so viewer discretion is advised–but, on the same note–don’t believe everything you see/read on the internet. You can be the judge as to whether you believe this or not. Here is a more technical version of the story that is in line with the above link.