Back in the days of Halo 2 a friend of mine suggested "a wounded puppy" being a funny one so it would say you were killed by a wounded puppy or the opposite for killing that person.
Back in my Halo 2 days my brother set up my gamertag for me before I could get to it. He set it as "C*** ROT"
It took several weeks for Xbox to catch it and finally remove it. So, I played the damn game for weeks with that name. It was not funny to me. --- "Opinions should be a result of a thought, not a substitute for it."