I told my parents that I was going to buy a bike to commute on before the Spring semester got out and they freaked out telling me they don't want me to ride on the road, etc. They don't know about my new bike and they are ~2hr (120mi) away so they don't really have a say. It's not that I'm hiding it from them, it's just that I'm not going to openly tell them about it (if they ask I'll tell).