His friends could play a prank on Naruto by making him think he's finally going to be made Hokage for a day. They could set up a whole fake ceremony with everyone in the village acting like it's real. Another prank would be to swap out all of his kunai with ones that have goofy faces painted on them. And they could also make it seem like all the Ichiraku Ramen is free for a day, but when Naruto goes to eat, they tell him it was just a prank and he has to pay double.
One of the pranks Naruto might do is to mess with the Anbu's communication system. He could use his knowledge of chakra and some basic electronics (if we assume some modern - like elements in the fanfiction) to scramble their signals. This would make it difficult for them to coordinate with each other, and they'd be running around trying to figure out what's wrong while Naruto watches from a hiding place, having a great laugh.
The Weasley twins, Fred and George, are the most likely characters to pull pranks. They have a natural inclination towards mischief and are always coming up with new and creative ways to play jokes on their classmates and teachers. Their inventions, like the Skiving Snackboxes, are often used in pranks.
If the wife is a heavy sleeper, the friends could carry on with their normal activities without much worry. But if she's a light sleeper, they might need to be extra cautious. They could even choose to go outside or to another room to continue their conversation. Also, the husband might feel a bit awkward and constantly check if his wife is still asleep, especially if the friends are being a bit noisy.
One possible answer could be that they might be talking about how they and their wives have different sleeping habits. For example, one friend could say that his wife is an early sleeper and wakes up early, while the other friend's wife is a night owl and sleeps in late. This could lead to interesting conversations about how they adjust their own schedules to accommodate their wives' sleeping patterns.
Well, I once had a friend who fell asleep standing up at a concert. He was so tired from all the excitement before. When the music stopped, he just slumped forward a bit and started snoring softly. It was hilarious.
Once there was a man whose wife was a very deep sleeper. One day, his friends came over for a surprise visit. They were all chatting and laughing in the living room, but his wife didn't wake up at all. The man was a bit embarrassed but also found it quite funny. He told his friends how she could sleep through almost anything. His friends were amazed and they all shared stories about their own experiences with heavy sleepers in their families.
You can pull story servants in FGO during special limited-time events or when their banners are featured. But it's not a fixed schedule and changes frequently.