With the enthusiastic question of "Who wants ice-cream?"

What is the more correct negative response?

1. "Not I"

2. "Not me"

Neither response is a sentence. The first response of "not I" sounds stuffy, like it should be followed with an indignant sniff. The second sounds like American idiom and acceptable for casual speech.

What do you say?

With the enthusiastic question of "Who wants ice-cream?", what is the more correct response?

1. (Not) I. 2. (Not) me.

Neither response is a sentence. The first response of "(not) I" sounds stuffy, like it should be followed with an indignant sniff. The second sounds like American idiom and acceptable for casual speech.

What do you say?