The images kind of look like placeholders, I'm hoping the finished version looks better.
Since everything in this game is a reference and he said it was Tuscan milk in particular, maybe it's loosely related to the whole thing about leaving reviews on Tuscan milk on Amazon.
http://www.nytimes.com/2006/08/09/technology/09milk.html?_r=0
The review meme thing is the only significance I can imagine, but even so, I'm not really seeing how it connects to Beowulf or his super... maybe it's some kind of in-joke at Lab Zero?
I honestly think it's just gonna be Mike himself, repeating the words from Beowulf's temporary loading screen.