It depends on the situation. If it's a small child sitting on a parent or a close family member's lap, it's usually appropriate as it's a way of providing comfort and safety in a crowded bus. However, if it's an adult sitting on another adult's lap in a non - emergency situation, it can be seen as inappropriate in most cultures.
A girl was on a long bus ride with her family. Her younger brother was really sleepy. There were no extra seats. So, she let her brother sit on her lap. She held him gently as the bus jolted along the bumpy road. They shared some snacks and looked out of the window together, making the most of the bus journey despite the discomfort of the crowded bus.
In a 'wife sits on lap story', perhaps they are reminiscing about old times. They might be looking through an old photo album together, and as she sits on his lap, they laugh at the funny memories from the past. It's a sign of their comfortable relationship.
I'm not sure specifically as I haven't read that particular fanfic. But it could potentially be about a moment of interaction between Annabeth and a character named Pervy, perhaps in a context within the world of the original story it's based on.
Yes, for example, in a family gathering when the son is young, the mom may sit on his lap playfully for a brief moment to share a joke or a warm family story. It can be a sign of a very close and affectionate family bond.
One 'mom sits on lap story' could be a heartwarming moment when a young child is feeling scared during a thunderstorm. Mom sits on the child's lap to comfort them, and they read a favorite book together. It's a simple yet powerful moment of bonding.
One story could be when a couple was at a family gathering. The husband was feeling a bit tired and stressed from all the socializing. His wife noticed and sat on his lap, giving him a warm hug. She whispered kind words in his ear, reassuring him. It was a simple yet intimate moment that showed their strong bond.