Well, up to this point in training (at least in the Prop pipeline) you have to have done something spectacularly stupid to get named something, but even then, you don't see any call signs. All that will change of course when you get to your first Squadron, as you develop a reputation, anything is free game, the way you look, talk, fly, you name it, and the wardroom gets together and decides to name you, hopefully you haven't done anything too stupid while all this is going on. But chances are, being the new guy, you will end up doing something quite hilarious (at your expense) in the eyes of the rest of the wardroom.
Speaking of callsigns, as for me, I need to stop hitting birds, had another bird strike on final the other day, we had just taken off straight into the pattern, and I was on my 3rd touch and go. 200' high on short final to RWY 27 here at NAS JAX, and this stupid bird can't make up its mind, tries to climb over us, no go, then tries to dive beneath us! Well, went straight by our nose, and BAM! right into our nose landing gear, we landed, I hit reverse, and about a million feathers went flying out in front of the plane. Bird was wrapped all up and around the gear, mashed up the two nosewheel landing lights pretty good too. My Onwing mentioned that I needed to stop doing this, either he or I was going to end up with a name because of this! doh!
Also, on an engine failure after refusal yesterday, I left a skid mark down the runway at Cecil (didn't get full forward yoke in to keep the plane down). IP told me if I did it again I was going to be called "skidmark" from then on!
You can imagine how other things can happen, and suddenly you have a call sign, the only thing in your control is how you respond to it. We'll see, not something I am all too concerned about, probably since it hasn't been a very big thing to date in training, probably more so for Matt in jet training, with living that fast paced lifestyle of his!