> When the purple swamp hen appears, it brings remembrance
There is a song (Oumachas) from which this saying derives: Once there was a young couple who made love in a secluded spot in the taro garden. While they were lying together a purple swamp hen darted out of the brush startling the couple. Eventually love cooled, but thereafter whenever the girl saw a purple swamp hen while she worked in the gardens, she recalled her lover. Hence any occurrence that brings back fond memories.
> If it is my lunch it can be divided, if it is yours then it cannot
Two men habitually trapped fish in the same region of the lagoon. One would occasionally ask the other to join him at lunch, the other would always refuse. One day the man who refused arrived with no lunch. When the usual invitation was extended the man refused, saying that, anyway, he had no lunch. The invitation was insistently pressed until the reluctant one gave in. As they split the taro between them the one who shared made the above statement. The idiom is a mild rebuke of a retentive person
> Really a child of the back.
A child (sometimes an adult) that behaves well whether its parents are present or not; a child that is good when one's back is turned.
> It's like the rat of Ngerard, which eats up all your coconuts and (then) all of ours.
It's a decision, plan etc. that will backfire. A pet rat owned by Mad, chief of Ngaraard, ate the coconuts of most of the chief's neighbors, then, still hungry, ate the chief's own coconuts.
> You grab and then you pick it up.
Like telling a joke, you're still telling it yet you laugh like you just heard it.