Sankaku Channel/belly inflation

Belly Inflation covers a number of related fetishes which have in common a rapid growth in the size of the belly, or roughly the area between the groin and the sternum. It differs somewhat from pregnancy fetishes in that the expansion of the belly must occur in a short time, minutes or hours usually, days at most, rather than the months typical for a pregnancy.

Variations

Belly Inflation comes in many variations. Most of these differ primarily by the manner in which the subject is inflated. The most "realistic" forms involve inflation with water, some form of gas, or food "stuffing", however, unlike their real YouTube counterparts, hentai subjects often go to extremes that are beyond normal human capacities.

More fanciful versions of the fetish involve inflation with massive amounts of semen, the tentacles of sea creatures, monsters, or aliens, or the eggs or embryos of any of the previously mentioned creatures. In this last case, the fetish strongly resembles a pregnancy fetish, except that there are often a great many embryos and belly expansion is usually rapid and often grotesquely large.

There are several other varieties, including demonic pregnancies, and several where the source of expansion is never suitably explained, other than that might be the result of magic or magical food.