How can I burp on command?

Question

I have read Al the sites on the first page of the Google search, so don't send me those. If your just gonna say something like "I can but i cant teach it" don't bother. Also, i don't want to hav eto use soda.

Answer 1

Swallow air! I recall when I had a Barium they gave me 'liquid oxygen? Some crystal they mixed with water and told me to drink fast. It was supposed to help the barium along but all I did was burp.