WBFFL is an acronym for "worst best friend for life". It is when two people say they cant imagine not being in each others life but, then one finds out the other never actually meant any of it at all. So they are in turn your worst best friend for life because you will never forget them even though you neverreally knew them at all.
Sean is my WBFFL!
by Buttercuup June 19, 2011
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