whats he drinking to achieve such high level of co2
The problem with this if/when you dont expel all the air, you are going to be farting like crazy. So if you want to bother your wife, suck in a bunch of air, hold it in and let them rip like crazy in the evening. That should teach her a lesson or two about bothering you in the evening.He is sucking air into his stomach. Anyone can do it.