My friends actually have this feat filmed. It just started off as a gag for a 60 minute movie
they made, but one of my friends took it too far (depending on your views of this kind of thing
) and decided to drink the entire gallon carton of milk, and did it in under an hour, but of
course, he threw up the milk at least 24 times (forced himself by sticking fingers in throat) before able to finish the entire carton. I have to say, it was a very amusing, AND DISGUSTING to watch.