Of course it was me, 7 letters
Possible response to Is that you?, 7 letters
It doesn't matter... anyone's fine, 7 letters
Any person, 7 letters
No one in particular, 7 letters
Unspecified person, 7 letters
First part of a Groucho Marx comment, 14 letters
Start of a quip by Groucho Marx, 14 letters
Observation: Part 1, 11 letters