1. A slang term for "stupid" or "foolish": This is the most common meaning of "dappy". It's often used to describe someone who is acting silly, careless, or lacking in common sense.
2. A slang term for a person who is dressed in a flashy or flamboyant way: This meaning is less common but can be used to describe someone who is overdressed or trying too hard to impress.
3. A nickname for someone named "David": This is less common than the first two meanings, but some people may use it as a shortened form of the name David.
4. A specific brand of clothing: Dappy is also a brand of children's clothing, particularly known for its brightly colored and patterned designs.
5. A reference to the British rapper/singer, Dappy: He is part of the group N-Dubz and is known for his unique style and often controversial behavior.
To understand the meaning of "dappy" in a specific context, you need to consider the surrounding words and the overall tone of the conversation.