I was taken by how incredibly funny the novel was, in a deadpan way, with laugh-aloud scenes, such as when Scout's teacher at school is horrified to discover that her pupil is literate.

I used to laugh aloud whenever I come across people who used to say this to me.

A man might jut out his chin, try to make his chest appear as large as possible, unconsciously flex an arm, laugh aloud, and smile.