Something that is very common on the internet: a way to offend somebody, by angering or hurting them.
The insult "fuck you!" is odd, since fucking is a pleasurable activity. "Rape you" would make more sense. And "damn you", despite that it is considered milder, is actually worse since it is somebody's condemning that you are wishing.
"Whore" and "slut" merely refer to people who sleep around frequently, which is not a bad thing in itself, provided that it is consensual and protected. "Wart", "pimple", and the like, would make better insults since they are truly unwanted things.
"Taigh na Galla ort!" Scottish Gaelic, literally meaning "House of the Bitch on you!" which equates to "Damn/fuck you!"
Seriously, the insult world in English is weird; "fuck you!" when fucking is a pleasurable act.
"Go mbeadh cosa gloine fΓΊt agus go mbrise an ghloine" Irish Gaelic, meaning "May you have glass legs and may the glass break"
"Tuiteam gun Γ¨irigh ort." ("May you fall without rising.")
"'S e as a' bhaile nam guirean a tha thu!" ("It's from the town of the pustules that you are!")
"'S e mìr na caca a th'annad!" ("It's a piece of shit that you are!")
They make more sense; when really thought about, most English insults (or at least their order from lightest to most offensive) don't seem to make much sense.
Your value doesn't even amount to the juice squeezed from an old whore'ssoiled Tampon. Do your keepers a huge favor: do a triple summersault through the air, and disappear up your own asshole.