They are just jelly that they haven't come up with an original name like yours. xXWizardx69Xx pls ;OOO;Don't worry, you are not the first, and definitely aren't the last. XD
That is pretty much the only insult that the so-called "people" on XBox Live could think of, other than "your mother ___" and "you are a 6-12 year old" comments.