To persist with an argument (typically on
the internet) to the point beyond diminishing returns with the
persistence of idiocy. A derpbate often involves two parties (often on
the internet) in mild-to-extreme disagreement repeating each others points with slight modification in response to one another. A portmanteau of "Derp" and "Debate."
Sunday, sunday, SUNDAY, watch the
socially inept Randroid debate the campus Communist
in the CAGE on a politics forum! You
do not want to miss one excruciating line of this ten hour derpbate!