The act of masturbating together, to porn, wearing a box on the head to avoid seeing each other. Because that would be awkward.
Might have be triggered by the ridiculous house prices in London forcing adults to share flats.
Up for a box night?
Yeh!
Bring your own box. I've just got one.
by The Q. January 22, 2014
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Not leaving your house/couch for the entirety of the evening.
Brad: You want to hit up the casino?
Laura: No thanks.

Brad: Come on! It's a Friday night!

Laura: I'm having a Bird Box Night and not leaving my house.
by Lbell515 January 1, 2019
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