Jerry Beck of Cartoon Brew says:

I received several old issues of Cracked magazine over the holidays and noticed this article predicting life in the 21st Century had become surprisingly accurate.

"Today's Swinger is Tomorrow's Square," illustrated by John Severin, appeared in the 1974 annual Super Cracked (It was most likely a reprint from a 1970 issue). In it, the writer predicts that young people will embrace the "skinhead" look, home computers ("Electronic Home Teacher") and even the ipod: as "electronic brain stimulators" and a "musical computers" that young people are hooked on.

I've attached one image from it... but check the whole piece at Cartoon Brew.