a sister who is also a best friend, or a friend who is closer to you than a friend and is more like a sister.
My sister, Kim, is also my best friend; she is my sister-biffle!
I love my friend Kristin so much, we are such good friends that she is more like a sister to me; she is my sister-biffle!
I love my friend Kristin so much, we are such good friends that she is more like a sister to me; she is my sister-biffle!
by BAD1484 May 13, 2010
Get the sister-biffle mug.this is crystal. she's super-awesome. we're biffles. i can talk to her about anything, and thats why she's my biffle. = don't question it. =
by typhoon August 5, 2007
Get the biffle mug.by ryan July 23, 2003
Get the biffin mug.yo ma biffle what up?
by brandon Horton July 6, 2008
Get the biffle mug.An ugly girl who compensates by being promiscuous.
by evandouglascurtis October 15, 2008
Get the biffer mug.When someone hits something really hard, sometimes used in cricket matches when a batsman proper smashes the ball. I think it originates from the old batman show when they had fights with the bad guys. Sometimes words came up in bubble writing when someone got hit, an one of the words the used was biff.
by Tom Tench May 16, 2008
Get the Biffed mug.