Is there some sort of logical rule that says: Once you’ve been reduced to a slippery slope defense, you’ve officially conceded any and all arguments?

Uh, in the real world, if your employer had rules regarding uniform dress and you made a public show of intentionally breaking them, you’d most likely be fired. Forget a fine.

You made an outstanding point if you were trying to sway an audience of people afflicted with some sort of cognitive deficiency that made it impossible for them to utilize critical thinking and logic.