Everybody knows what NSFW means. It's not safe for work if a link contains misogynistic videos, or various curse words or insane prattling sure to upset the boss and your co-workers.
But what about safe for work? Have we thought too much about what's safe?
Is it SFW to criticize a plan your boss loves?
Is it SFW to ship a product without having every single possible meeting beforehand?
Is it SFW to engage with your customers honestly?
Perhaps it's time to revisit what's safe where you work.