Cars. I don't know and I don't care.
My brothers best friend (who happened to be my old best friend until I grew up) is the worst with this. He's 22, a total stoner with no job, the ugliest girlfriend who will not shut up about trying to sleep with me, barely shows up to school, has no job and no ambition in life. But yet, his mom bought him a 2007 Mustang and its everything to him. He will not shut up about this stupid car. We can be talking about something completely different and it comes back to the car. He thinks he is the coolest guy on the planet because he has this car, yet I've seen 4 or 5 of them in our neighborhood (same stupid yellow color and everything). It's ridiculous.