Had a fun experience (ugh) two nights ago with our home alarm system. Seems that the battery needed to be replaced, so every four hours the alarm would go off, shocking us out of a sound sleep. First thing yesterday morning I disconnected the battery from the system and shut it down, planning to go and buy a new battery ASAP.
Other logistics for the day dictated that I ended up walking into Home Depot on that errand with a geocaching friend, a gray-haired guy 15 years older than me. Despite the fact that the battery was for *my* house and that *I* was the one who explained what I needed and asked where to find it in the store, both the greeter and the guy in the electronics department spoke exclusively to my friend. Apparently my lack of a Y chromosome means that you can't have an intelligent conversation with me in a hardware store. GROWL.