The condition in which the male genitalia shrivels under cold conditions.

Additional causes are triggered by fear. Your genitalia then hides in fright in its cave and becomes a Guginno.

Guginnos may be mistaken by the Asian population as they may seem to have Guginnos throughout their lives.
Guy A: "Dude, I had mad guginno when I went to Canada."

Guy B: "Oh! I thought it was always that small."
Guy A: "Oh C'mon Man..."
by Mr. two incher January 01, 2012

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