Confession: When I was a kid, I got into a fight with my brother because he broke my favorite toy (it was a ship that can transform into a robot, pretty cool). After beating him up for a while, my mother heard the commotion and came in the room to check on us. As my 9 year-old self panicked, I looked at my brother lying on the floor groaning in pain and an idea struck me. I thought "If both of us are hurt, I wouldn't get into trouble".
... So I proceeded to throw myself onto the floor next to him and moaned as though I'm in pain. Nevertheless, my brother told on me and I still got an ass whooping ...