Harassment Loophole

[BiffWellington]

Being sent a message telling you to relay nasty messages to your friend would probably count as harrassment in itself, so they might have a valid case even if you technically don't.

This is pretty much what I was gonna say. I think I'd respond to such a request with, "Please stop harassing me." Then there's a record in the chat log that someone feels directly harassed by his behavior.