Originally Posted by AnonymousGender
I don't think, in terms or genetics or brain cells, that you become dumb. What might be happening now, could be that you end up spending too much time with them, which prevents you from studying more... Resulting in bad grades... So you suppose you're getting dumb.
Also, hanging with them could be affecting your way of thinking... Perhaps getting a little more immature rather than mature.
But, no... Hanging out with them will not make you any dumber.