HugeGape

You need to be on all four, with your head down on a pillow and your ass pointing upwards. Then stretch as you normally would with your hands or dildo. Do not push out. Just relax the anus. As you take a dildo out, the asshole will remain open, allowing air in. Then you just fart as you normally would. I recommend using a lot of lube, as it makes the process easier. I usually inject a lot of lube first. It makes farting more enjoyable, and it's satisfing to feel and see the cum running out of my ass. The best I believe is to mix a kind of fat (coco, olive, crisco, whatever..), X-or J-lube, and some neutral body lotion will help bind the water in the X- or J-Lube, making for a nice and thick, white slime you that really cushions the ass, allowing for hard punch fisting etc. You can see how I stretch and fart with lube here : https://xhamster.com/videos/deep-anal-fisting-lube-runs-out-of-destroyed-gape-fart-xh1zAdV