The earth is flat.
If there is something I love doing, it is starting an argument, especially at random moments, like "the earth is flat, prove me wrong." I love doing it with the people I'm closest to. Each time my friends hear me come up with one they huff, because despite everything, I am a sore loser. A competitive opponent, but the truth is, I just love stimulating their brains. I love playing dumb to provoke them, we laugh at it though.
They'll tell me to do something and I will say "I don't understand," they will say it in other languages till we get to gibberish and laugh it off.