Top Definition
A weekend event when two or more male friends convene at either ones residence to partake in indoor activities in a man-cave/entertainment room. The activities typically consist of watching sporting events or guy movies (usually above typical volume levels), playing of games (such as: video games, pool, poker), ordering of pizza or other pub-style foods, and conversing in a juvenile or serious manner about women and other random topics of interest that would not usually be spoken of in the presence of women. At the discretion of the individuals, these activities may include the consumption of alcoholic beverages or other illicit substances.
"Dude, we need to get together soon for a hybronation."
by Preybird November 16, 2011

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