Milk is a nutrient-rich liquid food produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals, including breastfed human infants before they are able to digest solid food.
It would be imagery because the excerpt is very descriptive.
<span>Two weeks later, Dr. Jekyll gives a small dinner party, for which, we gather, he is well known, for the narrator refers to it as being "one of his pleasant dinners." Five or six of Dr. Jekyll's old cronies are invited, and among them is Mr. Utterson. As usual, the food is superb, the wine good, and Utterson manages to be the last guest to leave.</span>
He was used to being made fun of.
We know this by him taking this reply in ‘with a sort of humble patience’. This means that he has experienced this kind of teasing - or even bullying before and he is used to it.
I would say it’s the last sentence the one with the pie!