Expression: sagged back

[Haihao]

Hi,

Could you please help me make out the meaning of the following sentences?

[Mister Micawber]

.
1-- Yes
2-- Sort of; the past perfect suggests that they never before did so.
3-- Yes. I suppose the first 'it' is 'enjoying good food', but that leaves us with the 2nd 'it'.-- some trouble or hanky-panky assembling the meals? Or maybe Yossarian is talking about some greater truth, like serving in the military.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Haihao]

Good morning, Mr Micawber. Your comment 'Or maybe Yossarian is talking about some greater truth, like serving in the military' made me completely wake up too!

Thank you again!

Haihao