(it's almost never correct)
Guy 1: "Well I drank 6"
Guy 2: "I only had 5"
Party host: "and I had 5, so who drank the last beer?"
Guy 1: "Not me"
Guy 2: "Not me"
Party host: "Fucking beer math!!"
"Beer Score" = (Beer Size x Beer ABV) / Price
Used to get the score of the beer you are drinking and to compare against other beer's score.
Quart of Olde English costs $3 at the corner store... 32oz x 5.9 ABV / $3 = 63
So using Beer Math it takes 5x as much money to get drunk off Guinness at the bar than it does from OE in parking lot.
Adam: There is none. I used all the money you gave me.
Josh: There is no way a case of beer cost 20 bucks.
Michael: Guess we have to get the receipt out and do the beer math.
HOW TO USE BEER MATH
One: you take the number of people that are going to show up adding possible no-shows or the classic 'unexpected's'.
Two: you roughly determine how much each person will have depending on serval factors, such as the time of day, the persons mood, the persons girlfriend (whether or she approves of drinking) the night before, (whether or not a possible hangover is still very much effective) so on and so forth.
Three: you then compare that to the number of beers you have total assuming of course you have no money to buy more. By calculating this equation you can then figure out roughly how many beers you will ultimately have drank by the end of the night.
two will only drink 2-3
the rest will have 6 or more
Divided into 30 beers
= a shitty Friday night.