Pornography

Pornography (abbreviated as porn) is the act of doing something sexy, recording it, and publishing it on every porn site. Porn is very profitable, as it rakes in $10-12 billion in the U.S. We can't say the same for other countries because we don't know how big porn is in them.

History
The first porn video was shot in 1881, when a French woman decided to undress in front of her husband. He recorded her doing this sexual act, and released it as a seven-minute "movie" in 1895. In 1945, 22-year-old Judy Garland decided to record herself wetting her panties and doing other sexy things in front of a female doctor, who was also in a bra and her wet panties. It released in 1950 as The Bitch Doctor Tests Judy Garland's Sexiness. That video was the first well-known porn film. Garland went on to shoot over 100 porn videos, including one that featured her wetting her panties without a bra on, which released in 1957. In 1993, the porn films have been remastered and released to Pornhub. Since the first porn video featuring Garland, many girls have recorded themselves wetting their panties and/or doing other sexy things.

The rise of the Internet
In 1981, 100 years after the first porn film was shot, the Internet was launched, along with Pornhub, the first porn website. XNXX followed not long after, in 1983. 14 years later, Xvideos launched. Since then, those three sites have grown to 300,000,000 users each. It is also worth mentioning Tumblr and Youtube have small porn communities, although the latter has no nudity. All of them mostly consist of cheerleaders, wet panties, or cheerleaders with wet panties.

Hentai
Hentai consists of a Japanese drawing of some well-known character doing a sexual act, most likely on another well-known character.

Omorashi
Omorashi (Japanese for "Wet panties are the best". Coincidentally, also Chinese Korean for "I need to pee, so I'll wet my panties instead of pissing in the toilet") features girls holding in a lot of urine and/or wetting their panties. Unerotically, some girls wear pants while doing the aforementioned.I know, but hey, maybe they'll take their pants off!

ABDL
ABDL (acronym for Adult Baby Diaper Lover) features adults wearing and/or wetting adult-sized diapers. One interesting thing about this type of porn is that it features adults, while the others feature adults as well as children.

Asian
Asian porn features Chinese, Japanese, Thai, and Korean women doing sexual acts.

Schoolgirl
Schoolgirl porn features schoolgirls doing sexual acts.

Cheerleader
Cheerleader porn features cheerleaders (usuallly Chinese, Japanese, Thai, and North Korean) doing sexual acts.

Sweater
Sweater porn has women masturbating in sweaters. That's all.

I'm Shy
The participants' whole face(s) (not just the eyes or the nose) is off camera or the participant(s) wear masks (the kind that hides your face, not the 2020 kind. And by "not the 2020 kind," I mean that the mask covers your whole face and not just your mouth and nose).