"Officials: ‘Clown Penis’ Is Not A Realistic Callsign For Pilots"
“The goal is to come up with a name that fits the individual pilot’s character as well as capturing some possibly embarrassing that happened when he was new,”
“The name cannot be too cool for the pilot in question, which is why you don’t see a lot of ‘Top Gun’-style callsigns across the force,”
“Another example is a pilot who was known as ‘Boom Boom;’ it was given to him because during carrier qualifications training, he forgot to release the parking brake prior to a catapult shot off the ship. As a result, both of his main mounts blew during the catapult shot, with a loud ‘BOOM BOOM’ noise.”