I smoked fake pot and now my hands are clamy why is this?

Overdose. Fake pot such as k2 or spice can be more potent than thc from marijuana. It is a chemical that is sprayed on the inert herbs, as a result it is not evenly distrubuted there may be higher "pockets" of the chemical on some of the herbs thus causing adverse effects. This makes it very difficult to regulate the amout you actually recieve.
?? What is fake pot? Maybe you smoked something with lots of impurities and unknown ingredients. Who knows - that maybe why you're having these symptoms.