Getting to 3rd base no longer means what it used to mean; don't even inquire about home plate

"The classic Meat Loaf song, "Paradise By The Dashboard Light," uses a clip of radio broadcaster Phil Rizzuto describing baseball players advancing around the field to narrate a young couple negotiating intimacy in their car.

It helped cement the public on the 1960s euphemism of first base, second base, third base and home plate for increasingly intimate sexual activities.

But even that is changing. According to a book by Australian sex researchers Juliet Richters and Chris Rissel, in the 1960s third base was "touching below the waist."

"Nowadays it seems that for many people the pattern of accepted activities includes oral sex as third base," Richters and Rissel wrote in "Doing it Down Under."

http://www.washingtonexaminer.com/nation/Americans-hazy-on-what-constitutes-sex-49618262.html