Big Mac (gaelic: Mhor Martbhorgaire) was an Irish warrior, born in Munster, who valiantly fought alongside Brian Boru from 997-1014. While ironically small in stature, Big Mac's battlefield exploits were larger than life and ultimately helped propel Brian Boru into the High Kingship of Ireland. In one renowned Viking raid Mac broke his famed sword "Perseus" but Mac, ever resilient, fought on ultimately beating 47 Vikings to death with the use of a stolen Viking Helmet.
Many a Norseman fell to the sword of Big Mac.
by TTSOZE5 November 23, 2009
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A McDonalds burger that is Numero Uno on their Value Meal Menus.
To clearify, a Big Mac has nothing to do with Bernie Mac, Elle MacPherson, Pornography, or anything else you can think of.
by M. Mathers June 2, 2005
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a big fat person with lots of rolls..
god that guy is a big mac
by brittany February 25, 2005
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(tune: camptown race)
you're going home in a body bag
doo da, doo da
you're going home in a body bag
oh de doo da day
one too many big macs
gave you a heart attack
you're going home in a body bag
oh de doo da day
by corsair47 June 12, 2008
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When a man fornicates with the buttocks of a woman. Different from anal because penetration of the anus is not necessary, it is most similar to titty fucking, only with the buttocks. Works best on women with large posteriors. Named due to the fact that the male is sticking his meat in between her buns.
I'd big mac the shit outta her ass!
by Ed the viking July 13, 2011
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the Kim Jon un of burgers and the big chungus of mc donalds that is overpriced but everyone eats it anyway
by PIKU NIKU May 29, 2019
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1. Savoury dish consisting of two half cooked cuts of meat, obtained from the neck of a giraffe. Once warm, the meat is placed with extreme care between 3 slices of Tesco value bread and served in an elegant polystyrene container.

2. A big rain coat
1. Hello, I’d like a big mac please. Can I have some source with that please… yes I will pay 5p for it you skank. I’d also like 6 pieces of fluffy white breast meat, a six digit number and date with me tomorrow at nine.

2. It’s got the name of a big rain coat… init!
by peterpiper June 1, 2005
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