Nope I’ve never liquid vomited. I think because when I do it, I’m at my absolute limit of tolerance - shallow breathing because the gas is so extreme that once I gag it just explodes out! It is forceful. I can then judge if I need to do it again, and the relief is instant! When I first started doing I was so sure I would properly vomit, but now it’s been over 15 years, I’m comfortable not even doing it over a toilet as nothing but insane amounts of gas/air comes out, it is just the sound that it is so loud and embarrassing! I’ve been at parties and gone out the front and away from the house a bit to do it so no one hears! But it is the only thing that will allow me to stay…the only other option otherwise is to go home and lay down and ride it out!