Is it possible to make an unintelligent person become smart within seconds?

no but they can become knowledgeable of new information.

Explanation:

you can teach someone new things who is unintelligent but that doesn't make them automatically smart. smart is a subjective term that can be defined differently by many. they are able to absorb that new information but being smart is having or showing a high degree of mental ability, if they show that then ding ding ding they did it! otherwise no.

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.