一名巴基斯坦男子因在道路纠纷中对人竖中指而被迪拜最高法院判处入狱一个月并驱逐出境。

Another don't in Dubai: Keep the hand gestures clean or risk a one-way ticket home.

That's the message from Dubai's highest court in a ruling that upheld（支持） the deportation¹ of a Pakistani man for a case of road rage that included one of the most familiar side effects - the widely known insult of a raised middle finger.

The Court of Cassation - the last stop in the appeal process - confirmed that the United Arab Emirates' strict indecency（猥亵，下流） codes cover hand gestures and the deportation sentence would stand, media reports said on Sunday.

It's no surprise for those familiar with the UAE's legal system, which is infused（灌输，充满） with traditional codes against public insults and other acts considered violations² of customs in the native Gulf³ Arab society.

But in Dubai's cultural soup - dominated by foreign workers, visitors and sun-seeking vacationers - such rules can seem far removed from the skyscrapers⁴, Western-style malls and lifestyle options that are much closer to California than Cairo.

The court ruling is the latest reminder⁵ of Dubai's split personalities⁶ as both ambitiously cosmopolitan⁷（世界性的） and instinctively⁸（本能地） conservative.

The Pakistani man sought to challenge his one-month jail sentence and deportation for giving "the finger" during a traffic altercation⁹（争执） .

The court, headed by Judge Mohammed Nabil Riyadh, ruled that deportation was acceptable to all acts deemed indecent（下流的，不礼貌的） under UAE law.

The complication is that it's often hard to distinguish the red lines.

Malls feature signs appealing for "respectful" clothing by women, but miniskirts and skimpy tops are common among foreigners.

Public displays of affection are officially banned, but the boundaries are unclear between a friendly kiss and romantic smooch（接吻） .

In March, a British couple was sentenced to a month in jail and deportation for what was described as exchanging a provocative¹⁰（刺激的，挑拨的） kiss in a restaurant. The couple insisted it was just a peck on the cheek.

Earlier last year, an unmarried Indian couple was sentenced to three months in jail for exchanging steamy text messages.

In 2008, two Britons accused of having sex on the beach got three months in jail, though their sentences were later suspended.