Does Morpheus tighten the neck?

Excuse me, but I'm a bit confused by your question. Are you referring to the concept of "tightening the neck" in a metaphorical sense, or are you asking about a specific character named Morpheus? If it's the latter, Morpheus is a character from various myths and stories, and he's not typically associated with the physical act of tightening someone's neck. Could you please clarify your question, or provide more context? Are you asking about a specific scene, story, or interpretation of Morpheus?