When I read this, I thought you're talking about
this. I remember when I was only getting into the "throat bulge" thing, when I saw MISM-246,
at around 2:02:00, it was one of those moments when you think, "Shit, now, every time I see this, I'll cum immediately". It all wears down with time, of course, but these moments are precious. If I like irrumatio for one thing, it's this (not the forcing per se, not the vomit, but this)
Also, it's Iramaccho, the same director that makes the KIRM series; here are
all the titles by him on MissAV
Which also reminds me: if by any chance somebody here doesn't know about
this site, I totally recommend it. It's a site (or sub-site) for irrumatio specifically, with detailed ratings and all that