My first and only moment came a couple weeks ago while descending a very long hill.
The speed didn't phase me as I just let my legs go 'gumby'.
What got me was the rather large "ramp", for lack of a better term, about 3/4 the way down that was formed by a buckle in the road.
By the time i noticed the buckle I had no time to decelerate and found myself airborn for what felt like several seconds.
With a frewheel this would not have been an issue but there is something unnerving about flying through the air with your legs spinning out of control. For starters unless you are spinning in a balanced fashion the subtle torque differences actually cause the bike to tilt (think gyroscope) while in mid-air.
I hit the ground at an angle with a small chirp of the rear tire and managed to regain composure without messing my pants.
I held the front brake as hard as possible the rest of the way down and managed to stop for the intersection at the bottom (50 meters).
Once the ticker migrated out of my throat I actually considered trying it again.

Yeah, I pretty much always stop my back wheel when it's airborne (including when bunny-hopping, generally). It's in part a mountain biking habit/reflex, but I like to have my pedals level so I can control the bike when I'm in the air.

Can some please explain to me why some people continually insist that fixed gear riders should strive to NOT use a brake when one is available?

Everyone knows that the size of one's genitalia is directly proportional to the gear inches of the bike, divided by the average number of times a braking device is used per mile.

This is why brakeless=indefinite balls.

indefinite? like "omg where are they"?

My dad and I were fly fishing in the Guadalupe River one day, in the Texas Hill country. It was springtime, and there were cyclists everywhere. We are downstream of one of the river crossings (bridges), which was situated at the base of a big hill. We see some cyclists go over the crossing, VERY fast. Then we see a guy come down the hill, disappear out of our sight, and his bike flies over the guard rail into the river right in front of us. An ambulance arrived a few minutes later to gather him from the pavement.

He was hurt pretty bad, but if he had still been attached to his bike as it flew off the bridge, he would have been much worse off.

no, indefinite like "a value approaching infinity"