Gack-pig
A gack-pig is someone who’s on meth and thinks the pipe is their personal throne, and no one else should be allowed to touch it.
He’s a gack-pig, and he’s sitting on the pipe like it’s a throne.
She’s a gack-pig, and she won’t let anyone else near the pipe.
They’re gack-pigs, and they’re both too high to know what’s going on.