Mom and boy cartoon sex content is a serious ethical violation. It's not only morally wrong but also illegal in many places. This kind of material can corrupt minds and damage the social fabric by promoting unhealthy and improper behavior.
The representation of the relationship can be quite diverse. Some manga might focus on the challenges faced by individuals with autism, while others might use it as a plot device. It really depends on the specific manga and its intentions.
Well, one way is to have a humorous wedding MC who cracks jokes throughout the event. Another option is to play some funny videos of the couple during the reception. You could also have some comical wedding favors to give guests a laugh.