And You Thought Other Days Were Ambiguous
To celebrate Fly Day, you can travel in and airplane, helicopter, or rocket.
You can use a jetpack.
You can jump off a cliff and flap your arms.
You can close yours.
You can play with one like you did in grade school by tying a string to it and watching it fly around in circles.
You could get all sci-fi and turn into one.
You could try to "be so fly" that everyone thinks you're still in the '70s.
Pick and choose which options work best for depending on your location, age, and how much time you can devote to the task.