Factophilic
When you know so many facts you can embarrass people just by saying them.
I told my class that there are 365 days in a year, and my teacher said I was right. My friend said I was showing off.
I said the human body has 206 bones. My brother said I was lying. I showed him a chart.
I told my mom that the first president was Washington. She said I was right, but I still got a sandwich for lunch.