They woke up one summer day and realized air conditioning wouldn’t be invented for nearly 1000 years...
http://www.freerepublic.com/focus/f-bloggers/3461086/posts
Nah...they woke one morning in blissful Eden and realized whitey would arrive in 200 years. This triggered severe anticipated micro aggressions which made them stumble blindly around, groping for their safe spaces, until they they fell onto the sacrificial altars to the sounds of “Alahu Cahokia-bar” and got separated from their noggins.