where do hiccups come from?

https://www.webmd.com/digestive-disorders/why-do-i-hiccup

What are the leading causes of hiccups?

• Eating too quickly and swallowing air along with foods.
• Eating too much (fatty or spicy foods, in particular) or drinking too much (carbonated beverages or alcohol) can distend the stomach and cause irritation of the diaphragm, which can cause ... (check the link above) :) 
• Any disease or disorder that irritates the nerves that control the diaphragm (such as liver disease, pneumonia, or other lung disorders).

So slow down when you eat and drink. :) And watch WHAT you're eating. :)