The focus of this study is the humour in English spoken podcasts which is conveyed through intra-linguistic or dialectal codeswitching. The aim was to define the formal and functional patterns in creating humour in podcasts through intra-linguistic codeswitching, and to analyse how the usage of such codeswitching relates to the identities and relationships between the participants of the podcasts. The analysis was done using a sequential approach to codeswitching, applying both concepts from social identity theory and politeness theory. The results show that codeswitching may be a way to enhance the performance aspect of direct speech, that a sense of shared group identity is important for humour that involves crossing to be seen as non-face threatening, and that imitations can be seen as non-threatening if the target is a celebrity. Based on the results, the study suggests that intra-linguistic codeswitching serves different purposes within humour, whether it is a way to make an anecdote seem more dramatic and engaging to the listener, or to construct an in- versus out-group identity.