I looked at the boarding pass in my hand, then at hers. Mine clearly showed the aisle with extra legroom; hers, a standard middle seat several rows back. Calmly, I told her no. The outrage on her face was instant, as if I’d broken some unspoken rule that the world must rearrange itself around her wishes. Her husband chimed in, accusing me of being “selfish” and “inconsiderate,” loudly enough for nearby passengers to hear.

But instead of turning on me, the cabin turned on them. Another traveler quietly offered to switch so the couple could sit together—if they took his middle seat in the back. The woman recoiled, insisting she “doesn’t do middle seats.” A flight attendant stepped in, checked the tickets, and firmly backed me up: I had paid for that seat, and I was staying. As we took off, the couple sat apart, fuming, while I stretched my legs in the space I’d earned. Entitlement had met a hard boundary—and lost.