by BiffleBaffler December 13, 2013
"We're not just friends, we're not just best friends, we're not just biffles, we're BIFFLES FOR LIFFLES."
by Mr. La-Liffle June 25, 2009
Crazy, Insane, Amazing, AWESOME Sex/sexual activites that partake between two biffles, or best friends.
Wow, last night was so crazy. I was over her house last night and we ended up biffle bagging. Hey there, fuzzy line between friend zone and bromance.
by ChristoferCraig March 19, 2011
by Dr. Fatz February 02, 2004
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
by emilydawsonx June 21, 2011
Best friends for life forever, when "best friends for life" and "best friends forever" are not enough
"We're not just friends, we're not just best friends, we're not just biffles, we're BIFFLES FORIFFLES."
by Mr. La-Liffle June 25, 2009