sir
What does sir mean?
In leather and BDSM circles, 'Sir' is a title with weight — used to address a dominant or a respected, experienced leatherman. It's part of the protocol the Old Guard borrowed from military culture, where honorifics were mandatory and rank meant something. You don't hand it out casually; it's a mark of dominance, experience or earned respect. A submissive addresses their Top as Sir, but so does the wider community honour a senior leatherman.
Origin
Leather/BDSM honorific carried over from the Old Guard's military-style protocol, where titles and chain-of-command respect were mandatory.