1. Turn a ceiling fan on
2. Boys stand in the middle of the room
3. One boy throws a sharp knife into the ceiling fan.
4. Everyone jumps under or behind whatever they can find

Kids these days with their tick tocks and iPhones will never understand the joy of seeing a knife lodged in the sofa you just jumped behind. "Dodge the Knife" was less fun for people who moved a bit slower, if that concerns anyone in your family.