I chug a soda (Squirt) about a third of the way and burp. Then I continue to chug it until it is about halfway empty, and burp some more. I chug the last half of my soda, then burp even more. Just when I thought I had no burps left, I stopped the recording and stood up. At that moment I felt a big burp form, so I quickly began recording again and burped again. Then I stood up again and got a few more burps out.