No, it is completely inappropriate. Teaching sex stories is not something that a grandparent should be involved in. This is a very private and adult - oriented topic that should be left to appropriate educational resources and parents or guardians when the time is right for proper sex education in a more suitable and ethical context.
There are no appropriate 'adult sex' stories involving grandpas. Such topics are inappropriate and violate ethical and moral norms. Literature should focus on positive, ethical and family - friendly themes.
No, it is completely inappropriate. Such topics are not suitable for a grandpa - granddaughter relationship. There are age - appropriate educational materials and people (like parents or school counselors in an appropriate context) to handle sexual education when the time is right, but it should never be a grandpa sharing sex stories with his granddaughter.
In modern literature, the presence of dirty sex stories is a controversial topic. On one hand, some may argue that they are inappropriate as they can be seen as vulgar and violate moral and ethical norms. However, others might say that if they are used in a context to explore complex human relationships, sexuality in a psychological or sociological sense, they could have some merit, but they should be presented with great caution and within certain boundaries.
In a civilized society, we should uphold good moral and ethical standards. These types of stories are not in line with the values that a healthy society tries to promote, such as respect, equality and propriety.
There are many other interesting and positive story genres like adventure stories or heart - warming friendship stories that are much more worthy of our attention.