Throwing peace signs (mainly when there's a camera aimed at them)
Shaving their arms (the girls)
Getting drunk and talking in English
Sleeping anywhere they can, mainly on public transportation
Wearing germ masks
Taking their shoes off and on. At a lot of restaurants part of the place has no shoes allowed and part of it doesn't, so the waitresses take
Cantaloupes that cost $150
In Japan, people hate:
Stealing. You can leave you purse on a table in a nightclub and wander away for 45 minutes and it will still be there when you get back.
Wearing short sleeves
Their teeth, they always cover them when they laugh. People say this is because of some ancient tradition but really it's because it's snaggletooth city.
Eating in public
Talking on cell phones in the subway