What Tourist Habits Do You Find Rude?

We definitely know from tourists here in Ocean County. And goodness knows that almost all of us have seen less than polite tourist behavior. What tourist habits do you find to be inexcusably rude?

China apparently has such a problem with foreign tourists engaging in rude behavior that they've published a 64-page booklet of guidelines for foreigners visiting the country.

It includes suggestions like not to pick your nose in public. It urges visitors not to pick their teeth with their fingers, and begs tourists not to urinate in public swimming pools (you have to actually tell people that??).

So what behaviors do you notice from tourists to the Jersey shore that drive you crazy? Feel free to vent in the comments!