"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." is a grammatically correct sentence used as an example of how homonyms and homophones can be used to create complicated constructs.
Yikes. After I read THIS ARTICLE, I felt like somebody had placed a MONGOLIAN DEATH WORM on my naked brain for about a week.

I'm not sure I'm buying it...

But then again, I'm neolithic in most things - I hit something with my club, & then if I can't eat it I'm baffled.