Sealioning (also sea-lioning and sea lioning) is a type of trolling or harassment that consists of pursuing people with relentless requests for evidence, often tangential or previously addressed, while maintaining a pretense of civility and sincerity ("I'm just trying to have a debate"), and feigning ignorance of the subject matter. It may take the form of "incessant, bad-faith invitations to engage in debate", and has been likened to a denial-of-service attack targeted at human beings. The term originated with a 2014 strip of the webcomic Wondermark by David Malki, which The Independent called, "the most apt description of Twitter you'll ever see".
Description
The sealioner feigns ignorance and politeness while making relentless demands for answers and evidence (while often ignoring or sidestepping any evidence the target has already presented), under the guise of "I'm just trying to have a debate", so that when the target is eventually provoked into an angry response, the sealioner can act as the aggrieved party, and the target presented as closed-minded and unreasonable. It has been described...