Vietnam - Haircut

 According to locals, it is believed that a badly timed haircut could cause you to forget or having a memory loss. This is bad especially for students, while having a haircut right before an important test or exam makes you look good, forget everything they’ve learned during exam surely bad luck. So, it is better for the students to get a new haircut after the exam.

Hawaii - Rock

 It is a well known belief that when you visit Hawaii, avoid bringing rock, sand or other natural materials back from the islands as it will brings bad luck until the native elements are returned.

Thailand - Honk

 In Thailand, when you drive on the road, especially at night, is it important to honk when passing in dangerous corners where many accidents have occurred. It is believed that the honking allows you to greet the spirits living on the site.

Uganda - Sacrifice

 There is a belief that in Uganda, if men have some body abnormality, such as ear piercing or a scar, it will make them ineligible for human sacrifice because they are no longer pure and intact in terms of shedding blood.

Indonesia - Whistling

 It is best to avoid whistling at night. Some people believe that whistling at night could attract ghosts. This superstition is more prevalent in villages as people usually stay at home at night.