Top Definition
BEST FRIEND FOR LIFE TILL DEATH DO US PART; used by many teenage folk to express how much they love their best friends and how close they are with each other. The day they aren't best friends anymore, is the day they die. Self Explanitory.
Samantha is like, my BFFLTDDUP.
by karennn September 09, 2006
7 Words related to BFFLTDDUP

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