Gibberish lies at the limit between communication and noise, and intelligibility and unintelligibility, and plays an important role in everyday life. When we encounter unfamiliar words and strange dialects, we sometimes hear gibberish, and when we talk to small children and pets, we sometimes speak gibberish ourselves. But what exactly is gibberish? Despite the detailed accounts of perception and communication found in the phenomenological tradition, very little attention has been paid to gibberish. The aim of this chapter is to provide a phenomenological analysis of gibberish. I argue, in short, that gibberish is a disturbance internal to dialogue that, rather than reorienting our attention towards something else, makes us aware of our communicative activity itself or, more precisely, to a malfunction in our communicative activity.