Not knowing what to do with a cell phone with a broken sim card slot!
@Richard S Old men wearing bluetooth headsets, because they think they look cool - but actually look like robots gone wrong :)
Ok, I can't let this one go by. My brother-in-law (8 years older than dirt) wears what looks like a bluetooth earpiece. Actually, it is an over-the-counter hearing aid that is specifically designed to look like a bluetooth earpiece specifically so that it doesn't look like a hearing aid. Clever marketing to those who are self-conscience about losing their hearing.