Wife Loud Burp Kissing Comp

My wife has discovered a technique that allows her to burp much louder. It is a form of the swallowing technique. She struggles to swallow back to back so she swallows a few times then drinks water then swallows again. On sunday she was super full and gassy and did some super loud ones. Unfortunately I didn't record it but these are from a few days later. While not quite as loud I think it's clear that the technique is helping her make louder burps. I've put all the loudest ones again at the end after 8:20 if you want to hear them in one go.