That makes me wish I were flying again... I haven't gotten to do so in a few years and the last time was coming back from Spain.

So, this is NOT recommended, but:

When I was traveling abroad, I made the mistake of telling airport security that the laptop I had was my sister's and not mine (true) and was pulled from the line and brought into a little, dark room. They made me power it on and then off, then let me pass all the rest of the security, saving me about a half hour! It could easily have gone the other way, time-wise.