I know you are but what am I?

me: I'm Sharon Strezlecki
David: mum.
me: *pointing to my imaginary "pash rash" and quoting Sharon* Hi Mrs Kay, I've been home with my boi friend *finger circles pointing to my pash rash*
David: .mum.
me: no wait.. I'm not really Sharon Strezlecki - do you know who is *really* Sharon Strezlecki?
David: *sigh* who?
me: *hushed whisper* Aunty Jo.
David: _mum_
me: what?
David: I hate to break this to you, but..
me: what??
David: neither you *nor* Aunty Jo is funny enough to be Sharon Strezlecki.
me: ...

(turns out I'm Kim (keem) .. which character are you?)