Gurl 2: "I know right. He needs to get his head out of his ass."
Gurl 3: "Sad part ladies, he's so damn pretty!!!"
Literarily it means idoit or bastard, and can be used to express either or both terms.
"Don't be so ignorant you git"
"I hate that guy, he's just such a git"
Random person: "Git"
*Throws gravy on them*
Several more people: "GIT!"
*random person chattering on with bad jokes and annoying everyone*
Other person: "Stop being such a git!!!!"