As Scathing As A YouTube Comment
Used after being given a really lame insult. Originated from internet trolls that think insulting someone in the YouTube comments is going to have an impact.
Frank: Dude, you're so dumb
Steve: I know you are, but what am I?
Frank: ...That was about as scathing as a youtube comment
Steve: I know you are, but what am I?
Frank: ...That was about as scathing as a youtube comment