Idiomatic Expressions/Expressions idioms
I'd like to know if these two expressions idioms are a quiet different each other.
1. It's my cup of tea/It's my thing;
2.Out of my depth;
Actually, I grasp the meaning of the one "It's my cup of tea/thing", though, I'm not quite sure if they're interchangeable.
Let me give an examples and then you're going to correct me.
A: What do you fancy for?
B: I'm fancy going to swimming-pool. We can go together.
A:Oh, well. It's not my cup of tea.
Can I use: Oh, well. It's out of my depth.
If I am wrong, please let me know and correct me.