Probably stands for PreTeen HardCore (ponography involving children), often found in p2p networks. Most normal people probably would like to see those asociated with it killed.

When you eat dirt for the first time and leave your family to build a shack in the woods

stands for Pre Teen Hard Core,used in most p2p networks to download underage porn although 90% of it is spam such as simpsons porn,notifications from interpol,legal porn,letters from churches telling to reform,spam files telling how sick and perverse you are,fake files,virusus

Short for "preteen hardcore" or child porn. Used mostly on p2p programs such as Kazaa.

Related words: "R@ygold," "lolita," "kiddy porn"

Pressure, Temperature, Humidity Control.
Abbreviation used (mainly) in science fiction when describing the process of terraforming a planet i.e. making a planet more "earth-like", improving its chances of supporting Life.
Humidity refers to atmoshperic density, not concetration of vapor (H2O) gas.

stands for Pre Teen Hard Core which means underage porno (under 18)used in many p2p networks to get child porn,although 99% are false files like ads,spam,notifications from the cops(theyre fake),legal age porn,virusus,etc...

Short for Pre-Teen Hard-Core

Most often used as part of filenames in File-Sharing programs

Often linked to spam, but occasionally actually child pornography and sex acts (also known as kiddie porn,) which are, of course, illegal in most countries and also considered evil, immoral and perverted by most of Society as a whole

Thankfully, most hardcare child pornography is actually very difficult to find by the common internet or file sharing user as it uses codenames created by paedophiles to share with their files with one another