User blog comment:Asnow89/Battle of the Fantasy Foods- Round THREE/@comment-25236329-20140903115947/@comment-209.104.251.22-20140903174511

Greedy milk is freshly squeezed from greedy corpus skulls by Grineer workmen and Tenno laborers.

It's from an ingame event in warframe, first qoute in the link below. The community ran with it and one of our veritble legion (srsly, warframe community has a fucking army of talented fan artists) made the picture you see on this poll which became semi-official.

http://warframe.wikia.com/wiki/General_Sargas_Ruk/Quotes_Tab