... On premissionary Rapa Nui the kaikai, together with their corresponding cat's cradles, were not simple children's games but were used, among other things, to produce magic effect. They were highly important for the study of Rapa Nui's rongorongo. This is because it was apparently with the aid of cat's cradles that the rongorongo experts taught their pupils to learn many of the chants accompanying the incised inscriptions ...

Metoro never said kaikai when reading the rongorongo tablets in the presence of Bishop Jaussen. But he came close at Ea7-25 (where 72 * 5 = 360):

Ea7-25

kua rere - te manu kai i te kai

He may have avoided this word because he knew Bishop Jaussen would dislike hearing about such superstitions. Similiarly Metoro may have chosen to say hakaturou (make a blasphemy) instead of the correct hakaturu (to go down):

Turu

To come down, to go down, to descend; ka-turu-age koe ki tai, go down to the sea now; turuga, coming down, descent. Vanaga.

1. To fall in drops, to flow, to leak, to descend, a drop; turu ki tai, to take refuge at sea; hakaturu, to cause to descend, to lower, to take soundings; hakaturuturu, to heave and pitch. Turuga, declivity. Turuvai, water conduit. P Mgv.: akaturu, to conduct water in a drain. Ta.: tuturu, to fall in drops. 2. To stay, to prop. T Pau.: turu, a post, pillar, to sustain. Mgv.: turu, a support, rod, stay, to sustain. Ta.: turu, stay, support; turuturu, posts of a house. Ha.: kukulu, a pillar, a post. 3. To come, to arrive, to overcome; tehe e turu, through and through; hakarava hakaturu, quadrangular. Churchill.

Turou

Mgv.: a great sacriledge or blasphemy. Ta.: turou, a curse, to blaspheme. Churchill.

According to Bishop Jaussen the year was beginning not when the Gemini twins rose heliacally but at the opposite end of the year.