Ops, I stand corrected! I didn't fact check myself so the jokes on me.
However I did say ducking and running
Oh, please don't think I was correcting you .. just a bit of fun.
It's really hard to know when or by whom they were devised. I
think I devised "BCNU"(*) years ago, but I don't know if it was really me or someone else or many people independently.
(*) "be seeing you", as from the UK TV series "The Prisoner".
A friend uses KPtM ... "Keep Playing the Music".
G.