A butter
knife is a knife made from butter. As knives go it's pretty good as
long as you keep it very
cold.
Waaaay back before the Bronze
Age, there is no evidence of butter implements being used. However, we are sure that the cavemen used butter knives of a rudimentary design. Unfortunately for archaeologists, global warming of the earth over the past few thousand years has caused all ancient butter knives to
melt. All that is left are a few knife-shaped
grease stains. I wish people would stop warming thier bloody globals, it's causing untold damage.
We do know that the Neanderthals used butter spears to kill their prey, and butter arrows and quivers were used in the middle ages. Evidence for this has been found in the European Butter Mountains.