For two (actor muɴ-, CVCCV- + -um- & theme) to engage in jocular banter with each other (loc ref).
Humannuhannūlan: focus is on two who persist in jocular banter; munhahannūlan: focus is on three or more who engage in jocular banter; humanahannūlan: focus is on three or more who persist in jocular banter.
Jocular banter is engaged in to pass the time while sitting or working and is increased during rice-beer drinking sessions. It typically takes the form of an aggressor chaffing someone, as a rich person, to provoke him to sponsor a major blessing ritual, pāhang, so there will be meat to eat or to brew rice beer, īwa, so there will be plenty to drink. It is also used to chaff someone about his bad customs, sexual relationships with women and the like. Jocular banter, especially when dealing with sensitive subjects that might provoke anger, is veiled; the real meaning being understood by implication. Jocular banter often takes the form of casual chanting, appoh, in which one contestant chants a statement, followed by a group chorus and a response by a fellow-contestant.