How do I find other questions asked by a particular user?

I gave a serious answer to a question by 'Bob Barker' (about her boyfriend having put a camera in her bedroom) because I thought it was a serious question. Then, I saw answers by a couple of ladies that alluded to her 'grandfather' question and I'd like to know how to find that and see if my leg was being pulled. Also, when I first joined YA, I accidentally clicked on the Malaysian flag icon, instead of the US flag icon. How do I change from Maylasia to the good ol' USA? Thanks, Bob.