The who?

We watched Back to the Future last Sunday for our family movie night. Several days later, Gavin said to me "Mom, you know on that movie, the bad guys that are trying to get that man..." I said " the who?" not really understanding what he was trying to say. He said "You know...the amphibians!" I stopped for a second to think and then said "You mean the Libyans?" (The Libyans are who Doc stole the plutonium from to power the car.)