"PHI TAI HONG" are the most fearful ghost.These spirits died of violent death ( murder, crash car, etc). The velocity of their death surprised them. The most powerful of all is "PHI TAI HONG TONG KLOM" (ผีตายโหงท้องกลม), spirit of a pregnant woman. This ghost is more powerful because it has the power of two people.

Thai people are really afraid of these ghosts. Even today the belief is still strong in Thai society. Some ghosts stories are often based on women already pregnant and abandoned by their husband or boyfriend. After committing suicide, the ghosts of these women could be seen wandering and looking after their mate.