He's as finicky as a cat. 10.She's the world's number one fusspot. 11.He's such an anal retentive person. 12.Men don't like women who nag. 13.He's penny-wise and pound-foolish.
The students may be whining in their hearts, thinking that I nag too much and that I am such a spoilsport to lecture them to behave themselves before they can eat.