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Employing multimodal conversation analysis, this article examines a single episode of interaction taken from a studio session, during which two musicians check a chord progression. It illustrates how intra-activity micro-transitions are solely achieved through embodied actions. The detailed analysis reveals (a) how the suspension of “playing-along” is occasioned to exhibit participants’ orientation to auditory objects whose “turning-on” makes relevant disengagement from other interactional involvements; and (b) how the temporal complexities of multiactivity are contingently managed in exclusive order, explicating (c) members’ embodied practices for working around the organizational constraints of the auditory objects.  
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<jats:title>Abstract</jats:title>
<jats:p>Adopting a single case analysis, this article examines how the learning of the Japanese word <jats:italic>burikko</jats:italic> is occasioned in a bilingual lunch conversation through enactments that are employed for three interactional purposes: (a) renewal of laughter, (b) vocabulary explanation (VE), and (c) demonstration of understanding. The interactional analysis is enhanced by Praat to respecify the role of prosody in enactments. I first describe how <jats:italic>burikko</jats:italic>, the <jats:italic>laughable</jats:italic> of a humor sequence, becomes a <jats:italic>learnable</jats:italic> through a repair sequence. I then analyze a reinitiated joking sequence, where the VE recipient categorizes one of the co-participants as <jats:italic>burikko</jats:italic> and escalates the categorization through multimodal enactments. I argue that this jocular mockery, occasioning a demonstration of understanding, exhibits that the learning opportunity has been taken. Furthermore, I discuss how a repair work embedded within a larger humor-oriented activity may afford resources for language learning outside of the classroom, while sacrificing progressivity for intersubjectivity. The fact that the VE recipient, after intersubjectivity has been achieved, resumes the original activity of pursuing humor through the same means employed for the explanation of the target word offers interesting implications for CA-SLA and pragmatics.</jats:p>