Herpes: a noun, describing sores on someones genitals or mouth.
Also quite the bother when your trying to get someone to' do the dirty' with. Herpes is an STD you get from sleeping with dirty whores who you had drunken sex with. Trust me when it comes to whores, don't go cheap !
"Molly has herpes, that sucks."
"This sex would be great if it wasn't for my genital warts, aww Herpes"
"That's just a cold sore baby not herpes, i promise"