[Beetlejuice]

Originally Posted by Vanessa

Jenna is no friend for James. She's what a call a slithering snake.

He's the snake. Jenna's mistake was feeling protective towards Farrah and forming too close a friendship with her, even though she knew full well it was making her unpopular. That's not what snakes do. Snakes play the game so as to endear themselves to the people who matter, like James has done.