> Like seaweed at Kosiil, out with the tide and in with the tide.
Kosiil is a location in the lagoon where the seaweed can be seen to bend in and out with the tide. The idiom is applied to a leader who is too flexible and unreliable. In the short form (Kora char ra Kosiil) it may simply mean, "I'll go along with what you decide."
> Like an old woman who is cautious about coughing and breaking wind.
Among elderly women, it seems, coughing sometimes produces the unwanted effect of breaking wind. The idiom may be applied to any action that might produce an undesirable side effect, such as a hasty decision at a political meeting. As a caution, it suggests the need for leaders to consider all the consequences.
> Like Ngiramesemong, rehashing what has been finished.
Pertains to a person who repeatedly reminds another of past favors or continually recalls the mistakes of others. (My sources no longer recalled the episode or story from which this idiom derives.)
> I receive it and you ask for it?
A man asks for and receives that which he needs from a second party. A third party, learning of this, asks the first party for it. Used as implied or generally about any unreasonable request
> 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.