Have I not made it clear enough that I think this is a stupid idea? It's totally a stupid idea, and it will get you arrested if you try it. I just don't think that it's likely to crank up the terrorist paranoia machine. That machine might be idiotic and humorless and prone to overreaction, but it's set up to pattern-match to certain things -- bombs, hijackings, threats to airplanes or big dramatic monuments, guys with beards or turbans -- that this doesn't fit.

There's a big difference between doing something that could be construed as a bomb threat, however tangentially, and aping the forms of a bad superhero movie precisely to make a point about the harmlessness of what you're doing.