Unique

The normality is banality
I have no personality
Not really anybody
A bit of everybody
When it switches I don't see
I'm nobody, it's not me
I'll be eighteen and eleven
Thirty-five or ninety-seven
I'll bite and ruminate
If it's good, incarnate
I will absorb the trait
Embody and accumulate
Multi, I'm heterogeneous
So ingenious, I'm a genius
What a gift, what a thing
Know a bit of everything
I don't simulate being unique
It's their prospect that's oblique
If they ask, I'll give reply
Shallow statement, but no lie
My speech is so expressive
That may sound a bit aggressive
If they're shocked when I'm tough
It does not mean that I bluff