I'm afraid fishing just isn't my cup of tea.
Do you share my interest in fishing ?
Well, you mean, I can go fishing with you ?
Why not?
Are you interested in fishing at all？
I'm afraid fishing just isn't my cup of tea.
Underwater swimming interests me a great deal.
Underwater swimming ?
What do you so interesting about that ?
Attention!
That's why I like underwater swiming best!