1. It is entirely possible to get tennis elbow without playing tennis. In fact everyone I have spoken to got it from cleaning (I am blaming mine of steam cleaning the carpets).
2. If you usually tell your mom about your Goodwill deals first, continue to do so after every trip. If she has to read about them on your blog, she will call you at work at tell you you are a "bratty kid."
[Since my mom is a faithful reader of this here blog, I think she will get a kick out of the second one].