My mom used to tell me that when I was a kid... now I can use it against her.. thanks!

'Tis a shame...nothing quite as ill-mannered as a person chewing gum in the prescence of another person....

Singapore's reason for banning chewing gum is purely practical. They're rather proud of their spiffy subway system. Unfortunately, given the humidity and temperature of the city-state, any chewing gum stucked on the side of the carriage door will melt, resulting in a rather messy cleaning task.

You're also not allowed to carry durians on the subway--I think that was true in Malaysia, too, though I'm not sure.