peach of a {thing} (to be a) [exp]

Meaning:

• to say sarcastically that someone is good in something, in reverse and really, it’s not good.

Examples:

1. She is a peach of a student. He didn’t come to class even a session in this semester.
2. This new car is a peach of a thing; smooth, fast, and reliable.
3. She’s such a peach of a friend, always there when you need her.
4. That sunset was a peach of a thing; absolutely breathtaking.
5. The book you recommended was a peach of a thing; I couldn’t put it down!
6. Thanks for helping with my project; you’re a peach of a person.
7. That was a peach of a meal! Delicious and filling.