[saget]

I think it has to do with it being a finger food and having less "class" associated with it. It's not always an issue but I have definitely received judgment for ordering a burger

[hkmurakami]

Friend's father is thoroughly blue blooded and won't even eat fries with his fingers (will use a knife and fork)

[walshemj]

I was told by a friend in sales that it was an sacking offence for an IBM salesman to be seen in a Mc Donald's

[gt_]

in America, it suggests an acclimation to fast food.

[munificent]

In America, everyone eats burgers and is acclimated to fast food.