This article examines a particular form of popular expertise, one that uses aggressive, face-threatening confrontations as a means of achieving its goals. The specific case under scrutiny is the Swedish home renovation programme The Angry Carpenter (Sw: Arga snickaren), here considered as an instance of what has been labelled belligerent broadcasting. The analysis demonstrates that belligerent outbursts and emotional displays serve essential, but varying functions in the construction of the host’s expertise. Belligerence is both a method to achieve epistemic status and for the enactment of expertise. Paradoxically, through his belligerence the host promotes a common-sense theory of good communication. A key lesson to be learned from programmes like this is the curative power of ‘tough love’. When nothing else works, belligerence is justified as a method for diagnosing problems, dealing with personal difficulties and restoring healthy households.