"A fish out of water" is a metaphor for being unable to use your talents due to a change of environment.

It's apparently a metaphor for something uncatchable, light of body and fleet of foot.

No matter what happens, I won't give up.

Some English words have two spellings - "gray" and "grey", for example.

Whichever you choose, you cannot lose.

You shouldn't have made such a remark even if you had been angry.