Uh, no it’s not. As a parent my best advice to my sons, and to you, is that when you are already in a hole, stop digging. Before using any preamble such as white boy, imagine substituting something else like black boy, gay boy, Chinese boy, etc and then imagine the rightful blow back you might experience. I’m not suggesting any malice here on your part but rather some friendly advice to never use any stereotype descriptions as they really don’t serve any purpose in either a question or an argument you are trying to make. Just do your best to emphasize your own abilities and attributes in your application and that will be enough.