[kevin_thibedeau]

It is the response to the argument that "If you don't have something to hide, you shouldn't mind having your rights trampled on" with the attendant presumption that anyone with something to hide must be a criminal or a T7t.

[Roodgorf]

T7t? I'm not familiar with that term and my Google-fu is apparently not strong enough.

[SloopJon]

Like i18n or l10n: nine-letter word, starts and ends with "t", rhymes with "bogey man."

Edit: and no, I've never seen this particular abbreviation.

[pierreozoux]

Terrorist (It's like i18n stands for internationalization, )