On the subject of informality in upper-class speech, a study in the U.K. found that both working- and upper- class people were more likely to drop the "g" from -ing ending words than middle class individuals. This is obviously a different culture, but the same social pressures may apply.

Quote Originally Posted by Telonius View Post
I think about 50% of the reason for that is the Car Talk guys.
The other half is Matt Damon, the Afflecks and Mark Wahlburg.