that one's much older than the internet and text messaging. I had a buddy who used to wear a t-shirt with "btdt" on it in the '80s.
My btdt moment (in relation to your fear of murphy dropping a 6ci homelite gear drive in your lap after you sell/trade that 46" rn) happened last fall. I had a homelite 900-series piston in my 'watch list' on feebay (for several weeks), but hadn't "bought it now" because i didn't have a saw that needed it.
A 900d (which needed a piston) suddenly and unexpectedly came available to me. Went back to feebay to "buy it now"..........................and somebody had
just "bought it just before now".........a few
hours before. Rats.......