Bump and Grind or bump-and-grind refer to various kinds of rough movement, e.g.
双语例句
1
After many years in the bumpandgrind, and perhaps hardship, of reality in the working world, many people will tell you that their school years were some of the best times of their lives.
在多年充满坎坷和荆棘的工作经历后，很多人会告诉你他们一生中最好的时光是他们的大学生活。
2
He fall off the ladder and landed bump on the grind.