a cup of coffee

Explanation:

Uneven length and height. The level of description is different or very irregular.

Source:

"Book of Songs Nan Zhou Guanluo": "Uneven leeks, pick them around." Xiong Zhuan: "Since then, the monarch and the ministers have been unfair and all are saints."

Example:

These trees haven't been pruned for a long time, and they grow high and low.