goo Ranking recently published a survey looking at which bad table manners in other people just cannot stand.
The survey was conducted from the 24th to the 27th of December 2013, and 1,076 people completed a private web-based questionnaire. Note that the score in the results refers to the relative number of votes for each option, not a percentage of the total sample.
Here’s a random foreigner doing a number 10 and perhaps 20 too, as the middle finger looks a bit out of alignment.
Pretty much all of them annoy me to a certain exten; on the other hand, I can also be guilty of 3, 4, both 12s, and 17, although since 17 is a no-no in the west, it’s a difficult habit to break.