Sounds to me like you were just stoned, and you were super paranoid, and you started thinking about panic attacks and you gave yourself one, sort of a self-fulfilling prophesy. I bet it had something to do with the mint for you though, your body may not have been used to that or it could have sketched you out, but I could be wrong. The slo-mo you described, I understand that, you move and it seems like it's freeze frame vision or something like that, kind of like a flip book, you know? I've had that happen when I'm high as fuck, that's when I think to myself "Oh yeah, baked" haha. But your experience just sounds frightening, I'm glad something like that has never happened to me.