"Sea-Lioning is an Internet slang term referring to intrusive
attempts at engaging an unwilling debate opponent by feigning civility
and incessantly requesting evidence to back up their claims. "
http://knowyourmeme.com/memes/sea-lioning
Example:
Victim of sea-lion: "All black people are stupid."
Sea-lion: "I'm sorry, I think that statement is false, do you have any
evidence to back that up?".
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