"2% milk” refers to the fat content of the milk, but there’s a popular joke:

*“If it’s 2% milk, what’s the other 98%?”*

“I always wondered if it was 2% milk, what was the other 98%?” was cited in print in 1996. “I’m drinking 2% milk, wondering what the other 98% is...” was cited on Twitter in 2010. The joke was told on the American television sitcom *Parks and Recreation* in 2014.

Google Groups: sci.med.immunology

Did Vaccines Eliminate Polio?

*Keith E Gatling *

4/30/96

*Fat content of 2% milk (funny)*

I remember when I first saw 2% milk in the dining halls at SU, not quite knowing what it was. I saw skim, chocolate, and 2%, and the 2% seemed normal to me, but I always wondered if it was 2% milk, what was the other 98%?

Years later, after I found out it referred to the fat content, Cheryl and I had a running joke about it..."2% milk. What’s the other 98%? SOAP!"*

*For those of you who have absolutely no idea why that’s funny (and it may indeed be a “you had to be there” sort of thing), it’s a reference to Procter and Gamble’s claim that Ivory Soap is 99.44% pure.

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chitlins, a return to sanity

*Gary S. Callison *

12/7/99

(...)

And while we’re on the subject, I’ve always been curious: 2% milk - what’s the other 98%?

Twitter

FunnyOneLiners

@Funnyoneliners

I’m drinking 2% milk, wondering what the other 98% is…

RT @mytweecwetlife

8:18 AM - 30 Aug 2010

Twitter

Steven Winterburn

@5tevenw

We have 2% milk in the fridge, no idea what the hell the other 98% is.

3:40 PM - 15 Oct 2010

Twitter

Greg Gerla

@greg_gerla

I like to drink 2% milk, but I can’t help worrying about what the other 98% is.

#iamwhatidrink

12:14 AM - 17 Sep 2011

reddit

If some milk is only 2%, what is the other 98%? (self.shittyaskscience)

June 23, 2013 by zack4565

Twitter

Jay Spitfire

@hawkgirl_kane

“When they say ‘2% milk’,I don’t know what the other 98% is.” #AndyListofSecrets #Parks&Recreation

8:37 AM - 14 Mar 2014

reddit

If only two percent of 2% milk is actually milk, what’s in the other 98% of it? (self.shittyaskscience)

March 23, 2014 by djm1997

reddit

If my carton is only 2% milk, whats the other 98%? (self.shittyaskscience)

February 24, 2015 by Endermod

Uproxx

*The Andy Dwyer Lines We’ll Always Think Of When We See Chris Pratt*

BY STEPHEN TOMPKINS • 02.24.15

#CHRIS PRATT #PARKS AND RECREATION #TV QUOTES

(...)

*“When they say two percent milk, I don’t know what the other 98 percent is.”*