Greiður

Greiður is an Icelandic slang word used a lot by the infamous gang glacier mafia.
Greiður is similar to the word gleiður in a way.
It comes from the words Graður and reiður.
Graður in Icelandic translates to Horny
Reiður in Icelandic translates to angry

"Hey Tristan I'm feeling hella greiður after my sister defeated me at ping pong"
"You are sick Frank, get some help"
"Leave me alone, I'm gona go and blow my load in my f-150 pickup truck"