When you have an orgy on a pile of glitter so you look like a vampire from Twilight. This is not recommended because glitter is difficult to get off your skin. If you're talking about just one it's called a tworgy.
"Hey why do you have glitter all over you?"
"Last night I had a tworgy with some twitards it was crazy."
"You had sex with twitards?" O.O
"In my defense, I was pretty wasted. Now I have glitter in places that I'm not going to mention."