(Sorry Aicha for singling you out)

There's a story. I think it happened to Psy years ago. It goes like this:

I visit an EoFFer called Bonnie. On her MSN, I start chatting with people from EoFF, pretending to be Bonnie, only to suddenly say something that gives me away for who I am.

ie:

Bonnie: Y hay thar
Psy: sup
Bonnie: [small talk]
Psy: [small talk]
Bonnie: omg
Bonnie: lolasl??
Psy: PG??

100% of the test cases, the person replied:

Person: PG??

They knew it was me T_T HOW???

Topic is: could you pull this off? Are you so predictable that you need only say something and people would know who you are?