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1.
1) Used by someone to make you feel special, when really they have 50 best friends.

2) Used to obtain food, etc...

3) Used to sustain genuine strong friendships.

Often abbreviated BFF.
"Hah, you're my best friend forever!"

"If I can have some of that sandwich I'll be your best friend forever!"

"Let's hang tmrw k?

--
Mark (Your BFF)"
by Azoundria January 08, 2009