My form of slugging someone is ignoring them like the plague but I see how that might not exactly teach them anything. So slugging would definitely be a better option. I don't really have friends that talk poorly about any I've dated. At least not anymore but my friends and my dad trashed on my first girlfriend. I really should have just knocked them out back them but I didn't sadly.
I do hope that I haven't kept you up too late again. You need to "slug" some sleep.
I will try to sleep after seeing your video...I'll try lol.