Speng

Noun / UK Slang

Speng refers to someone who is considered silly, stupid, or talks nonsense. It is often used to describe a person who is not making sense or is acting foolishly.

Example: “You’re a speng, what are you talking about?”
Means: “You’re being silly or talking nonsense, what are you saying?”

Example: “Don’t listen to him, he’s a speng”
Means: “Don’t pay attention to him, he’s talking rubbish.”