ASMR (Autonomous Sensory Meridian Response) is the pseudo-scientific term used to describe a ‘tingly’ physical response that viewers of ASMR videos may experience from watching a combination of auditory, visual and tactile triggers. To explore how this might happen, we examine the experience of ASMR as a technologically-mediated, affective experience, using examples from prominent ASMR artists. We seek to understand this community of ASMR viewers through the disjuncture that exists between the embodied experience of tingles and deep relaxation, and its technologically-mediated delivery. In this paper, we explore ASMR as a mediated affective experience – uniquely shaped by online spaces and their affordances. After providing a brief overview of ASMR videos and creators, we explore how ASMR artists engage in boundary work through the definitions of ASMR that they produce to support a quest for cultural and scientific legitimacy. The practice of naming and defining ASMR creates a site affective 'stickiness’, where affective experiences are intentionally constructed and strategically heightened. Finally, we examine the provocations that research into ASMR may bring an understanding of the senses, affect and technologically-mediated intimacy.