Rick d'Israeli wrote:But I've heard that there's a bigger tolerance concerning the use of gnagnagna in the Randstad; is that true?
No, it's not; in fact, I myself was long prejudiced in thinking that the use of gnagnagna was significantly more predominant in the outer-lying regions of the Netherlands and neighbouring countries than it was in the more metropolitan environments I grew up in.
This brings us to an interesting thing to note about gnagnagna, namely its association with a certain degree of backwardness and outmodedness - hence the obvious association with, for example, the south of the country. More common still, however, is the association of its use, mostly by those who are not themselves well-versed in its intricacies and subtleties, with nefarious intentions of all kinds.
I myself admit to feeling quite ill at ease when, for example in the situation you sketch, where one is standing in a long line in the supermarket, one notices someone standing aside engaging in gnagnagna. However, I have come to accept that my feelings are probably an expression of an instinctive intolerance of difference and have worked hard to overcome it.