What should not be done in Sri Lanka according to local traditions?

In Sri Lanka, there are several important cultural prohibitions. Do not use your left hand for eating, passing objects, or handshakes—it is considered "unclean." Do not point at people with your index finger—this is a rude gesture. Head gestures here are opposite to the usual ones: nodding means "no," and shaking from side to side means "yes." Also prohibited are nudity, photographing military facilities, and carrying drugs—the latter carries the death penalty.

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