look up any word, like bae:
 
1.
Stands for best cousin(s) for life, similar to bff, but for cousins instead.
Elizabeth and Alexandra are close cousins. Elizabeth and Alexandra are BCFL.
by whiteshadow28 December 26, 2008
 
2.
best cousins for life
melissa & rebecca are BCFL* :)
by misss lissssss8-) September 27, 2009