The funniest first.

CH15;
JT's proposal LOL!!!
He - "Did you ever hear the old song ‘Going to One Wedding Brings on Another?’[...] we may try the truth of this same old song."

She - "But I never sing."

This has to be the funniest. :-D

JT - first ride in the gig CH 9;

“You will not be frightened, Miss Morland,” [.. ]“if my horse should dance about a little at first setting off. He will, most likely, give a plunge or two, and perhaps take the rest for a minute;
Catherine [..]resigning herself to her fate, ..
the servant who stood at the horse’s head was bid in an important voice “to let him go,” and off they went in the quietest manner imaginable, without a plunge or a caper, or anything like one.

CH:11
Some of us were amused by Catherine the 'weather girl'.
When she asks Mr. Allen for his opinion on it - he proves to be no 'weather man';

.....but Mr. Allen, not having his own skies and barometer about him, declined giving any absolute promise of sunshine.

CH: 14;
The Beechen cliff walk; The variety os subjects Henry talked on;

..transition from a piece of rocky fragment and the withered oak which he had placed near its summit, to oaks in general, to forests, the enclosure of them, waste lands, crown lands and government, he shortly found himself arrived at politics; and from politics, it was an easy step to silence.

CH: 15
The parting lovers, and James;
....who came to breathe his parting sigh.

Of course there are several others.