i can’t figure out what isnsig nu

What is Sig nu. I can’t figure out what they are. Been on this campus for years now and I can’t find the elusive sig nu. What is sig nu. I’m serious. Not tryna hurt any feeling or damage them egos but for real what is sig nu and is it confirmed to be a real thing. I don’t believe in Sig Nu. Sig nu, show me a sign U are out there, and I will believe tell the day I die.