Do you like vanilla or chocolate ice cream?
A: I don't like either. (
I don't like both.)
B: I like both. (
I like either.)
As I see, we use 'either' in negative and 'both' in affirmative sentences. Is it a rule? If not, is there any rule, which explaines this? Thank you.
BTW. 'I don't like both' would be correct, if e.g. I like each of them but not both at the same time on the same plate. That's not what I mean.