LOL sentences or paragraphs in otherwise serious books?

[Trevor]

Martin Cruz Smith's Gorky Park has a LOL one where the villain John Osborne tells the detective of his visit to Siberia where he was shown "the communal excretory where the village leaders would sit with their pants down and s**t while they made their important decisions." 

[The Burgomaster]

Martin Cruz Smith's Gorky Park has a LOL one where the villain John Osborne tells the detective of his visit to Siberia where he was shown "the communal excretory where the village leaders would sit with their pants down and s**t while they made their important decisions." 

I do some of my best thinking while I'm "dropping the kids in for a swim."

[ER]

Charles Dickens' books are full of those sorts of lines. Sometimes when he's been his most serious is when I've found him funniest.