* Similar to "Wow!" or "Oh my!" It expresses surprise, amazement, or wonder.
* Can also convey frustration or disappointment. Think of it like "Ugh!" or "Jeez!"
* Sometimes used in playful banter. It can be like "Gosh!" or "Goodness!"
The specific meaning of "Gee" depends heavily on the context and tone of voice used.
Let me know if you can give me an example sentence, and I can help you understand the nuance!