Source: Did You Know: The Lines On A Solo Cup Are Measurement Marks | KUNC
Stashed in: Alcohol!, Beer!, snopes!
I didn't know this...
Apparently it's just a coincidence that the lines correspond to measurements.
This explains: http://www.snopes.com/food/prepare/solocups.asp
I didn't know this, either.
I also liked the link on how to build a campfire: http://kunc.org/post/summer-science-how-build-campfire
I saw another, more crude variation on this theme today.
Series of brilliant billboard ads dedicated to promoting science in Vancouver, by Science World Museum
The Fastest Animal On Earth Is Not A Cheetah
Wait, how are we gonna buy alcohol? ~21 Jump Street
And now Breaking Bad also has its own beer...