Country Dictionary

A phrase used when someone wants to make something seem less offensive. Most of the time it just makes them sound like an asshole.

Person 1: "no offence" but you are fat and lazy...
Person 2: yeah well "No offense" but, this is why your mom doesn't love you...

a phrase used to imply you are about to offend someone

"No offence but your dress looks shit."

As opposed "Offensive" which is the correct spelling, often spelled wrong by the same people who 'a' as "uh".

It's offencive to me that someone fucks up the spelling of "Offensive". It's not 'offencive'.

To claim you are offended by something someone else says, no matter how insignificant or small it is, in order to play the martyr and gain the support of others even if you are in the wrong.
A tactic uses by people who are losing an argument to try to be the victim and gain support of others.

Don't try to use an offence plea here buddy!
A simple debate went wrong when the guy used an offence plea to gain support.