And if that wasn't common sense, we now have proof: A traveler who probably arrived at Stansted airport in London with hopes for a quick and easy experience got the opposite when he went in with his phone in a gun-shaped case.
To make matters worse, he put it on full display. Check it out:
The Essex police force dealt with the situation, sharing their own sentiments on the gadget on Twitter. Let's just file this one under “things never to bring to the airport, ever.”
Erika Owen is the Senior Audience Engagement Editor at Travel + Leisure. Follow her on Twitter and Instagram at @erikaraeowen.