A similar conversation in 1998 would have gone a little differently.
Shawn: "You and those damn acronyms... can't you just say 'ha ha that is funny?'"
(it took "lol" and "wtf" a while to become common use, too)
Back in the day, you had to make sure your message was worth it. With the age of instantaneous communication, we've definitely devalued single messages.