Tumblr - Pulling off a face like that would be guaranteed to shut anyone up

Sister: [Says she did something really dumb and didn't care, then starts laughing]

Me: “Ignorance is bliss”

Sister: “Whatever that means" [Starts laughing hysterically].

Every. Single. God. Damn. Mother. Fucking. Day.
It's gotten to the point where the only one in my house I don't want to murder is my younger brother.