Beetlejuice had already backed into the nearest wall, pressing his side into it and looking as though he'd like to disappear. This was his literal worse nightmare, happening, right now. The demon woman looked as though she'd been slapped when Lydia dared to speak to her. 

"Look here you little bloodbag, I don't know what my degenerate, useless sack of shit son is doing with you, but I would suggest zipping that trap of yours before I do it for you!" She began stomping towards them, her high heels clacking on the tile. Beetlejuice whined and shrunk to the floor. 

"Just do what she says, Lydia," He whimpered, "It's not worth it. She's too powerful to fight." 

"Look at you," His mother chided. "So desperate for someone to [i]love you[/i] that you slink around the [i]living world[/i]. God, you disgust me. I should have fed your sorry ass to a sand worm centuries ago!" 

"Mom, please," Beetlejuice begged from the floor.