It is rude to take advantage of your host
Bill was arriving at his girlfriend, Barb's, parent's house to meet them for the first time.
Bill wants to make an impress on them.
Bill connects with Barb's father and mother and helps clean up after dinner.
Bill has a long, engaging talk with Barb's father about fishing and then ask if he can borrow Barb's father's beloved bass boat sometime.
Barb's parents like Bill after meeting him.
Barb's parents become remote and go to their room after dinner.