to go to Prek Tnaot (a major insane asylum in Cambodia was located at Prek Tnaot -- now called Takhmau -- in Kandal Province; this expression is used in a joking or insulting way to describe someone who is acting silly or strange)
Kampong Speu River, I hear you crying, oh _ At midnight, the heavy rain is pouring down, looking for your husband, oh _ The Prek Thnaot Dam is filled with incense sticks, _ I do not draw the world, I am afraid of the consequences, oh