Your "Bestest Friendest" is someone so close, the title "best friend" just isn't enough. However, you can have a best friend *and* and bestest friendest at the same time-- the bestest friendest would be closest of course, and the best friend would be your second closest friend.
Chara is my best friend, but Natalie is my bestest friendest.
"shay-kuh-ji-nay-ting"
The fancier and better way of saying "shaking"
Sentence one: Why are you shakaginating so hard?
Sentence two: Stop shakaginating the table!
Sentence three: "smh" stands for "Shakaginating my head"