And then along came beer pong

 

Advertisement from July 1951 issue of Woman's Home Companion

Note the tag line:  AMERICA'S BEVERAGE OF MODERATION

According to Merriam-Webster, the first known use (in print) of 'beer pong' occurred in 1972.

Other coinages from the same year include:

1. air hockey
2. brain-dead
3. garage band
4. playlist
5. winningest

The origin story of beer pong is quite contentious, as you'll learn here, here, and here.