> It's like the foam of the sea, which forms unexpectedly and then disappears.
It's a matter that comes up for lengthy discussions and then is dropped without resolution or effect. Some things, like sea foam, drift on without settlement. Endless discussion without reaching agreement.
> Our nose is close (to the mouth), but cannot be licked.
i.e. we shouldn't be too sure of, or overconfident in, ourselves. The nose is very close to the mouth, but, no matter how reassuringly available, it cannot be licked by the tongue. The idiom cautions those who are careless with their possessions to be less assured about wealth.
> You're like a floating log without a resting place.
You have no fixed abode.
> Like the Bilimbi tree which, if not shaken, will not bear fruit.
Applied to a person who does not fulfill their obligations without constant prodding or nagging.
> He's like Chelebesoi of Ngeriil, dead in a fishtrap not his own.
A man named Chelebesoi (also the name of a fish) was robbing another man's fish trap when a head-hunting party came by and removed his head. He lost both his head and his reputation. The idiom may apply to one who gets hurt while trying to do someone else's job.