Youngsters these days (anyone under 50) use all sorts of strange words in their vocabulary. LOLs and OMGs are scattered all over the place. They use "random" to mean anything about an unexpected event, a strange (i.e. different) person, or more or less anything remarkable - except to mean what a dictionary defines as "random", of course.
Rather than rail against this I would like to surreptiously re-introduce some words into the language. Please add your own choices but my first contribution (whilst listening to Cab Calloway) is:
jive
Start using it again please folks.