http://noahpinionblog.blogspot.co.uk/2013/06/what-is-derp-answer-is-technical.html?m=1

“English has no word for “the constant, repetitive reiteration of strong priors” [in abject and willfully flagrant ignorance of any and all contrary evidence]. Yet it is a well-known phenomenon in the world of punditry, debate, and public affairs. On Twitter, we call it “derp”.”

— Noahpinion

I must admit I occasionally flerp some derp, and if I didn’t, I suspect that the complimentary gesture would rarely, if ever, succeed.