Idiom:
Quick buck ( easy money )
Hit the book:
Bang
Squish
Flip
Reverse
Chime
What was that bang?!
As you're coming into land, the wing flaps may be lowered again, and you'll "hear the wind like mad now". Leary adds: "If you are by a window, sometimes see the air is being squished so much, it leaves little vapour trails which follow the airstream over the wing."