Before emojis .......
Well before emojis were a thing (in the 1980's) shorthand existed for interoffice communication.
There was the old standards - SNAFU, RTFM, WTF (or its extended version - WTFIGOH?!)
I had an paperwork exchange (pre-email) with my direct superior at the time who was "old school cool" and returned an expenses slip (for a "client lunch") that went something like :
= WTFIGOH?
== CL
= FECL!
== Y - FECL - T&J (the clients) WTGT "JP" (known house of ill repute) FT&A
= OK. WTF.......