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1.
A term used when describing one's punani that is hidden or unknown to the general public and is unable to be located. This box may be hidden due to the presence of extensive pubic hair or due to an extreme form of genital fungus.
"I tried to hit up that box to get my freak on but it was hidden behind a jungle of pubes. It sure was a secret box!"

"Secret box, no secret box!"
by CockBlocker May 30, 2004
12 8
 
2.
A box that is secret.
Person: "I need a box that is secret to put my stuff that is secret in so that all my stuff that is secret is secretly secrete in my secret box that is secretly keeping my secret stuff that I secretly use for secret stuff that I do secretly."
by Evil October 18, 2003
15 11