To each his own, of course, but coy swearing is still swearing.
Actually I do sympathise. I swear too much (but not more than the average Aussie) and wish I could train myself to use some other intensifiers in my language but most of them lack intensity. By Jove! My word! Sweet zombie Jesus! Drokk!
I was driving from Brisbane → Tasmania last week and a helpful truckie definitely used the right indicator to tell me it was safe to pass. Thanks, mate!
Of course you treat it as a suggestion, nose out and judge for yourself before trying to overtake.