'I very much doubt he made his flight': Dude is rude to airport security, they select him for a thorough search

Being rude to people in customer service is only going to make your life more difficult, and it's really not a good idea to tempt someone who has the federal-granted authority to give everything you own—including your own person—a very thorough search. 

Further, if you're being overly aggressive and disruptive, you may be detained or banned from flying ever again altogether—which would be mightily more inconvenient than waiting for a disgruntled agent to rifle through your bag.

But—hey—flying can be stressful, so it's not abnormal to see people losing their cool during the ordeal that is air travel. Some people are such nervous flyers that it's not unusual for them to be acting a little suspicious, a fact of which they're often very aware. This only serves to make them more nervous, stressed, and suspicious looking.

This flyer witnessed another passenger having a complete meltdown at the security checkpoint, claiming that it was taking far too long for the security agents to check his bag. But his protesting only made the agents take longer. When he grabbed his bag to storm off, they let him know that they weren't done yet and pulled him aside for a full body search.