Now you have a good reason to change your username. Try to send theymos a private message with the reasons in OP, or likely send him the link to this thread. He could consider to change your username. He has done it recently for more than 3 users. The Pharmacist to The Sceptical Chemist, Igehh to igebotz and Ratimov to Symmetric. Although, the above mentioned names are established and reputable members. I don't know if your chances will be slim as per your rank. But considering your registration date, you are old enough to enjoy the privilege, even if it will be for once.

I think you have to first contribute in the forum and build up your account to a certain level before you make such an application. Theymos will not go about changing the username of random newbies who will disappear into the tin air any moment.