We were on our way back from Puerto Vallarta to Chicago for our senior trip, and for some reason the charter we were on (an airline called Planet Air) miscalculated fuel and we had to stop in Lincoln, Nebraska to refuel. It was a freaking hot day, and they had to turn of the AC while refueling, so naturally, the cabin turned into an oven.
As we picked up speed to takeoff from Lincoln, condensation from the AC poured out of the overhead bins. Naturally, everyone on board thought it was smoke and freaked out. One kid ran down the aisle screaming "SMOKE" at the top of his lungs. The pilot then came onto the intercom and explained to everyone what was happening, and order was restored, but for about 3 seconds, I started to see my life flash before my eyes.