(UK) Someone who is daft as a brush is rather stupid.
I may be daft, but I'm not stupid
I might do or say silly things occasionally, but in this instance I know what I am doing (Usually used when someone questions your application of common-sense).
An daf idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with daf, allowing users to choose the best word for their specific context.
Wörterbuch der ähnlichen Wörter, Verschiedene Wortlaut, Synonyme, Idiome für Idiom daf