> I build it and you destroy it?
May be applied to a person who feels his aims or projects are being destroyed by the actions of another.
> Like the cockroach of Ngerdobotar, staying on till it became white.
Presumably if a cockroach remains in the darkness for a long time, as one at Ngerdobotar (in Aimeliik) apparently did, it will turn white. Application pertains to a visitor who stays on and on, especially one who is not helpful in the household. Such behavior is not properly human; the person is somehow different, like a white cockroach.
> Like his father, for he ate his father's premasticated food.
Applied to a child by adoption, with the implication that the adopted child resembles his adoptive father
> Like the duck of Ngechur, he became industrious after growing old.
The idiom is applied to a person who has more or less vegetated into maturity and old age and who, already far past his prime, suddenly tries without success to do all the things he might have done when younger. It may be used with reference to an elder who tries to be a dandy.
> From the mature tree the sapling dribbles.
Eseos is a mature tree, dalm is a sapling; olengimch means to drip, drizzle, or dribble. Application is to the similarity of the child to its parents, generally its father.