I have seen some dumb movies in which a kid grows up and looks exactly like his father . I know some twins do that but is there any chance of this happening between a father and his son or somethin ? Even though it has probably never happened (or has it ?) is there a chance it could happen theoraticaly ?
No. Kids generally tend to be a lot smaller. Once they grow up, yes-ish.
I defer to your authority in this area, as you are clearly a dad.