>"Hello, I'm not a terrorist"
I'm afraid that under no circumstances would this be a good idea. It reminds me of the phrase
"John F. Kennedy was not a homosexual"
from Chip Morningstar's essay How To Deconstruct Almost Anything [1]. To present an example of deconstruction Morningstar deconstructs the phrase thus:
"It is not generally claimed that John F. Kennedy was a homosexual. Since it is not an issue, why would anyone choose to explicitly declare that he was not a homosexual unless they wanted to make it an issue? Clearly, the reader is left with a question, a lingering doubt which had not previously been there. If the text had instead simply asked, "Was John F. Kennedy a homosexual?", the reader would simply answer, "No." and forget the matter. If it had simply declared, "John F. Kennedy was a homosexual.", it would have left the reader begging for further justification or argument to support the proposition. Phrasing it as a negative declaration, however, introduces the question in the reader's mind, exploiting society's homophobia to attack the reputation of the fallen President. What's more, the form makes it appear as if there is ongoing debate, further legitimizing the reader's entertainment of the question. Thus the text can be read as questioning the very assertion that it is making."
Shift the above text to the present tense and replace "John F. Kennedy" with "the passenger" and "homosexual" with "terrorist" as needed.
[1] http://www.fudco.com/chip/deconstr.html