This would depend on who the person is
Though I would say that Culture does influence a persons weight
(My guess is true )
This means that he feels very drugged as if he had just taken an opioid or something. He hears a nightingale singing saying that the bird is spreading its happiness too much. He is also saying that he too is happy because he can hear the nightingale sing somewhere amidst the forest.
A moral story. hope thats what ur looking for.
