Sentence examples for a bit fucking thick from inspiring English sources

The phrase "a bit fucking thick" is correct and usable in written English, though it is informal and contains vulgar language.
It can be used to describe someone as somewhat slow-witted or lacking in intelligence, often in a humorous or derogatory context.
Example: "After he failed to understand the simplest instructions, I had to admit that he was a bit fucking thick."
Alternatives: "a little slow" or "somewhat dim-witted".