I don't think it's a common type of story. Cuckold stories in general are not mainstream, and when you add the 'too big' qualifier, it makes it even more niche.
I'm not entirely sure specifically what a 'too big cuckold story' is without more context. It could potentially be a story related to cuckoldry where there are elements that are considered 'too big' in some sense, like perhaps the situation or the actions involved are extreme.
Yes, if it's a big gift, it can be really exciting. For example, a big teddy bear. It might be 'too big' to handle easily but it's super cuddly and a great source of comfort.
Stories that promote respect and love in relationships are more valuable to share, like stories of couples who support each other through difficulties.
Well, without more context, it could be a story about finding the perfect balance. Maybe it's a fable where a character realizes that neither extreme - being too big (greedy or over - ambitious perhaps) nor too small (too timid or lacking confidence) - is the right way. It could be about a little animal that learns it doesn't need to be the biggest to be important, but also can't be too small and meek to get what it wants in life.
The 'too big too small story' could potentially be a children's story. It might involve a little character who encounters things that are too big for it to handle, like a giant mountain it has to climb, and also things that are too small, like a minuscule key it has to find to unlock a door. This type of story could teach kids about the concept of scale and problem - solving.