>>11996821It depends on how far we are from it.
If we assume to be near enough, probably we would just feel a really quick-increasing pressure due to the black hole gravitational field, which would end up with our implosion. We would realize that something is wrong only at the very end.
If we are further, then we would essentially feel the same thing, only a lot slower and we probabily would, still slowly, die because of it.