text: why do humans hiccough? under what conditions will a person hiccoughs?some says if you don't drink ehough water, then you will get it. why and how? a hiccough (or hic-cup) occurs when:  while many cases develop spontaneously, hiccups are known to develop often in specific situations, such as eating too quickly, taking a cold drink while eating a hot meal, eating very hot or spicy food, laughing vigorously or coughing, or drinking an excess of an alcoholic beverage. hiccups may be caused by pressure to the phrenic nerve by other anatomical structures, or rarely by tumors.