bfclr = The most common symbols associated with the Rainbow Girls are a pot of gold, a rainbow, and and two hands clasped together with the initials “BFCL” (for bible, flag, constitution, and lambskin). Lambskin is a reference to the lambskin aprons worn by Freemasons.

https://nationalheritagemuseum.typepad.com/library_and_archives/2016/12/the-international-order-of-the-rainbow.html#:~:text=The%20most%20common%20symbols%20associated,%2C%20constitution%2C%20and%20lambskin).

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