Cum swallow porn is the kind of porn that shows women ingesting cum. Some women like to do this for their men and others don't. This category is, of course, devoted to those who do. These chicks are really good at sucking and there is no shortage of cum. The swallowing part makes it hotter and a lot of guys enjoy seeing the woman gulp down the semen. Watching a woman open her mouth and show that the cum is gone is quite erotic. This is the most common type of deep throat and many find it the most arousing. The hotness is magnified when the cum is being swallowed, so this is one category that doesn't need anything fancy, just good old-fashioned oral sex.
Some women won't swallow and it has to be caught on camera or it's not believable. Some women hate the taste of cum and do not understand the implications of their refusal to swallow. There are plenty of women out there who are more than happy to do so, however. The hotness of the swallowing can be amplified through different actions. For example, there's cum gargling. It is when a chick gargles with the semen. Some do this just before they swallow. Some women do the reverse. They start by swallowing a bunch and then do a cum gargle. This can be arousing, too.
The hotness is amplified with some women because they are more into the blowjob and less into the swallowing. They will swallow because it turns the guy on, but they won't enjoy the taste of the cum. You can always tell. And it’s always hot.