The act of one man masturbating while towering above a group of chicks, as the women wait with great excitement (open-mouthed and straining necks) and anticipation for the man to ejaculate into their mouths.

When the man does shoot his load, the women eagerly cajole with each other to get a taste of the man cream, and greedily devour the spunk as though their lives depended on it.
This emulates the way chicks in a nest anticipate the food (often worms) their mother may bring to them. Upon tasting the worms the chicks become increasingly excited and eager to get as much of the worms as possible, often fighting for the best position, and largest portion of food.
This scenario is often witnessed in porn videos, and often follows the man having vaginal or anal sex with one of the women before the women partake in the birds nesting. However, it doesn’t have to be exclusively in porn videos.
Man: “Sweetheart, my balls are as hard as rock, and waiting to blow. Why don’t you invite a couple of your girlfriends round, for a bit of birds nesting?”

Girlfriend: “I thought you’d never ask, darling.”
by bob's mullet July 9, 2010
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When using a public restroom, a bird nest is layering toilet paper on the seat to avoid being tainted by germs prior to sitting down.
Joel unable to control his explosive diarreah was unable to create a bird nest in time. Fortunatley for him he always keeps a spare pair of panties in his office drawer.
by Mr. Revenge May 5, 2010
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Placing toilet paper around the seat of a toilet, to form a protective barrier from the germs on the seat. Mostly done in public bathrooms. Looks remarkable like a birds nest
Me: I don't wanna pewp in that stall, it looks real disgusting...

Dave: Dude! Just birds nest it!
by bobmcd123 September 11, 2007
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A penis that is so small it does not hang and barely pokes beyond the pube line, giving it the appearance of a hatched baby bird and two eggs.
Holy crap, that asian kid's junk looks like a Bird's Nest.
by Shocka41 July 11, 2009
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The act of placing toilet paper in a toilet in order to absorb all of the water, then defecating on top of it, rendering the toilet unable to be flushed and resembling a bird's nest.
Prior to leaving the hotel room, Johnny got caught Bird Nesting the toilet to spite the crappy hotel service.
by JoshAndMitch January 16, 2011
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The toilet paper shield that some people construct around the seat of a public toilet so that they don't contract any of the various forms of ass and sexual diseases that thrive on porcelain.
"When Brenda left the bathroom, we were puzzled as to why all the toilet paper was gone. She then explained to us that she had birds nested it, and suddenly everything made sense."
by sressler December 22, 2006
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A girls un-shaved vagina, puss, Furr Burger... it somewhat resembles a birds nest, minus a bird... unless you still wanna slip your bird in there...
Tell your sister to grow out her birds nest for me!
by Ralph bitch September 12, 2010
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