Rasarnavasudhakara 3.384.p8

3.384.p8

ity atra ānanda-kośa-bījotthāpana-mukha-vyāpārāṇāṃ rūpaka-bījotthāpana-dhruvā-gānārthānām api anyārtha-pratītyā hāsyakaratvād ayaṃ vyāhāraḥ |

Here, because the phrases 'ānandakośa', 'raising the seed', and 'mouth-activity' cause laughter through an alternative meaning understood alongside their dramatic senses of planting the plot-seed and singing the dhruvā song, this is humorous speech (vyāhāra).