Anyone who's been to America will tell you this is how a lot of Americans eat, fork in the left, knife in the right cut up the food then put the fork in the right hand to eat, if you watch you'll see people on films and TV do it, I do it too but my Mum was American and she taught me how to use a knife and fork so I guess that's where I picked the habit, I have to force myself not to do it when I'm eating out.
Just another Americanisation like all the people who now have Moms not Mums.
Maybe AZ turns you in to an American
K