Well, in many fanfictions, their relationship often develops through shared experiences. For example, they might go through tough times together, like dealing with threats to their family or the Earth. These experiences bring them closer and make their kisses more meaningful, as they represent a deeper bond formed through adversity.
It could be that Gohan and Goten did something that seriously disappointed Chichi. For example, they might have broken an important family heirloom while playing their rough Saiyan games. This would definitely make Chichi angry enough to kick them out as a form of punishment.
Well, a smut novel refers to a book where the focus is heavily on sexual themes and often has very detailed and graphic descriptions of sexual acts. It's not for everyone and is usually considered more adult-oriented.
No. Fanfics involving sexual content are not appropriate as they violate the ethical and moral standards. Goku and Chichi are characters from a well - known franchise, and creating such inappropriate fan - made content is disrespectful to the original work and its audience.