To not only be horrendously bad at something, but be convinced of your amazing and overwhelming talent at it.
"Only me and Barry get booed... Only good players get booed" - Neifi Perez
"Way to go Mr. Nash, you totally neified taking steps!"
The Absolute worst You can possibly be at something.
Also: An immediate threat to the future of San Francisco Giants baseball
I was playing Risk like Neifi Perez plays shortstop, of course I lost.