Enter the tarmac on foot or in your car
Arrive late at your gate
Ask for a transfer at your gate
Argue with a flight attendant inside or outside the aircraft
Request anyone for a parachute (you won't get one)
Request anyone for an ejector seat (actually, do this one. It'll make the attendant chuckle)
Try to fill your car with jet fuel
Throw things
Break into the control tower
Interrupt an Air Traffic Controller
Try to hack into ATIS or FAO signals (this is illegal; they'll triangulate your transmitter, find and arrest you)
Fly a plane without permission
Insult, assault, offend or attempt to provoke Security personnel
Abandon luggage anywhere in the terminal
Make jokes about terrorism near border guards
People saying Spike is hilarious because that would imply he's always been a shapeshifter even when Twilight was in Canterlot, and that teleportation of scrolls via flame burp may not actually be a thing dragons do.
...at sea level.
Oxygen toxicity occurs when you breathe pure oxygen at high or regular pressure. However it is not harmful if you breathe it at low pressure, which is what astronauts do. (Low pressure atmosphere is also less stressful on spaceship hulls when protecting from the vacuum of space.)
There really isn't much to go on.
The My Little Pony calendar would depend upon more in-depth presentation of astronomy, but as it stands they basically just put the moon wherever, and stars are randomly located using flash sprites.
There's more to go on using the assumption that the year is 365 days and that the moon is about 8 times closer to the World (with proportionate size decrease) to explain how there's been two Apple Family Reunions over the course of three years, and that there's been 100 full moons between the first episode and the Apple family reunion we see half way through Season 3.