The FAA has strict guidelines for carry-on baggage size, and they're not just suggestions - they're like the law! Most airlines adhere to these rules, which state that your carry-on bag should be no larger than 22 inches tall, 14 inches wide, and 9 inches deep. That's like trying to fit a small suitcase into a shoebox, right?
Now, you might be thinking, "But wait, I've seen people carrying on bags that are way bigger than that!" And you're right, some airlines are more lenient than others, but don't be fooled - those bags are like the celebrities of the airport, they get special treatment! For the rest of us mere mortals, it's best to stick to the rules to avoid any bag-gate drama.