Joe,

I'll offer a comment about your kids - all kidding aside

The acronyms pre-date the Internet - they go back to the BBS days (and earlier) when you had to "byte" the bullet, and pay "real money" for every message that went "down the wire" (which it was then) - acronyms help conserve bandwidth.

Herewith one from 100yrs back..;)

RSVP - Sam