the laughing assassin is the person who says whatever they like to anyone, then blames their victims’ lack of humour or “oversensitivity” for the offence they cause. the laughing assassins’ take on life is this:

"i will continue to pour forth my “jokes” with no apparent thought to the fact that nobody ever laughs. if i upset you, that’s your problem. remember ... i was just joking. i really can’t be blamed for it. your lack of good humour or intelligence means you “take me the wrong way” all the time"

or this:

"i am too gutless and stupid (and possibly aware of it) to speak my mind clearly and openly or back up my opinions. so if i insult or offend you, i can’t allow an argument. i’ll just say i was “joking”. no argument needed. the jury has decided that an argument is surplus to the needs of this interaction. i could lose, and besides, it’s not MY fault you’re so sensitive”.

... hey you. once and for all. you’re not funny