10 Ways You've Been Accidentally Insulting People Every Day
2. Fingers Crossed
If you ever find yourself in Vietnam, keep the finger crossing to a minimum. Or don't do it at all.
You might find it irresistible to cross your fingers when wishing for luck upon yourself or someone else, but the meaning of this gesture in Vietnam is far more graphic than you would have suspected. The gesture basically represents a certain body part on a woman, so if you absolutely must "cross your fingers or hope to die," try hiding it behind your back or in your hoodie pocket.
Luckily, Vietnam is the only place where you have to worry very much about crossing your fingers, so if you're not there, do it all you want.