This happens to my friend as well. The first time he had some he kept asking me to "take this" and trying to pull an invisible ball out of his mouth. I said "ok, let it go" and gestured as though I was taking it from him. This seemed to help (he did not enjoy the sensation). It happened to some extent the next two times he tried spice as well. Quite strange, as neither I nor our other friend experienced anything like this. The spice is clean (white freeze precipitated), so it's not lye or anything; he seems to just have a peculiar reaction. Interesting that many others seem to also experience something similar.