"Bestie Intuition" is some sort of higher 'knowledge based' power between two or more best friends where in everyday life or conversation, one can guess or even predict the thought or action-plan of another bestie before they say or do the thing that they had planned in there mind..
This "power" or "sixth sense" is often found between twins or extremely close siblings.
Ben - "hey man, whats doin'?"
Mitch - "oh hey man, nothin' much, just thort i'd have some food, i was thinking n....."
Ben - "Noodles?!"
Mitch - "ahh yeah dude, how'd you guess that before i even said it thow?"
Ben - "Bestie Intuition my friend... Bestie Intuition :)"