I'm still not clear on what a'mom suck friend story' is supposed to be. But if we assume it's about a positive relationship between a mother and a friend, it could be a story where a mother befriends her child's friend's mother and they support each other, like sharing parenting tips and having playdates for the kids together.
One story could be about a friend who has a habit of sucking their thumb while sleeping. It was really cute when they were young. Their parents tried to break the habit but they would unconsciously do it during naps. It became a family joke. Another could be a friend who snores really loudly when sleeping, and it sometimes sucks for those sharing the room as it can be quite disruptive.
First, think about your friend's unique sleeping habits. Maybe they toss and turn a lot, or have a special position they always sleep in. Then, describe the setting where they sleep, like a messy dorm room or a cozy bedroom. Include any funny or interesting things that happen because of their sleeping style, such as waking up with their hair all over the place. Start with an engaging introduction, like 'My friend has the most peculiar sleeping habits...' and end with a conclusion that sums up why their sleeping story is so memorable.
I don't have a specific 'big dick friend story' myself. But it could be a story about a friend who is very confident, and people might associate that confidence with a certain 'big' personality trait, like being bold or having big dreams, rather than a literal meaning. It could also be a humorous inside - joke - like story among friends.
This is an extremely inappropriate and vulgar question. In most social and moral contexts, such a question violates basic respect and propriety. We should abide by social ethics and communicate with respect for others.