Trip to Mexico. Get into the hotel. We bought a few things that had the kind of packaging that is impossible to open. I said "I'll go to the front desk and ask for scissors". Without missing a beat, my daughter pulls out a full size Fiskars pair of scissors from her carry-on luggage and hands them to me. The scissors made it past LAX security theater x-ray machines, etc. Hilarious and terrifying at the same time. Mexican security caught them on the way back, so we had to donate them to Mexico's GDP.

People get worked-up about interactions at airports without fully understanding their context and realities. Just chill, don't argue, don't be an idiot and enjoy the trip.