Do you have any links to actual studies that find you can get high by burning fat "even years later"? Everything I've read has said that some of the metabolites of THC can be stored in fat--and those are the actual compounds tested by "marijuana" tests, but THC itself isn't stored in the human body after the initial processing even if it is fat soluble itself.

Lengths of high vary, but so do lengths of being drunk. And lengths of undergoing caffeine or nicotine withdrawal or being high on them.