<human>: Can you provide a brief rundown of the text in within 3 sentences?

Ok, a week ago I saw this listing for a decent laptop. The guy wanted to trade a decent laptop for a smaller laptop, due to "size constraints" and I just happened to have a rarely used budget net book that occasionally had problems such as having difficulty turning on and overheating if one ran far too intensive programs. We met at a public place (Barnes and Noble) and examined each other's laptops for a decent time, 5 minutes and traded. Fast forward a week and the guy wants to trade back and claims he's talked to a lawyer who he says is "an easy win case". Does he have a case? Or he just trying to bully me into trading back?
<bot>: I traded a guy a mediocre laptop for a better one and now he wants it back with threats of a legal suit.