What can cause tingling sensations in the hands and feet when you are high from smoking pot?

Hard to say: but my best guess is probably hyperventillation, either from the act of smoking itself (excessive breathing in and out causes reduction in carbon dioxide level, which in turn reduces ionized calcium which results in paresthesias - tingling in hands and feet). If it only occurs then, that is the likely explanation, but if it also occurs at other times, you should talk to your health care provider.

Not typical: My best guess is that it is a variant of hyperventilation syndrome. As a result of relaxing your respiratory rate doesn't adequately slow. This related to chronic anxiety and CO2 escapes and your blood becomes more alkaline and paresthesias occur. I advise getting professional evaluation & support for anxiety. I suspect a variant of PTSD if not overt PTSD.