A phrase used to make insults seem socially acceptable.

I couldn’t care less (but one must keep up appearances, right?)

Something you say right before you offend the living shit out of someone.

The phrase you use before you knowingly, intentionally, and viciously offend someone.

A phrase added to an otherwise insulting statement. You say "no offense" right before or after you say something that is insulting. "No offense" allows you to say just about anything you want about anyone.

It is sometimes followed up by "none taken." The recipient of the original comment says "none taken" to signal that they were not insulted.

a phrase that is believed to make a really rude comment less rude, but really just makes you look like a jackass.

Something someone says right before saying something that may be offensive. as opposed to, say, not saying anything offensive at all.