Video: THE RESULT! Justin Bieber takes the makemineMilk Challenge! (facebook.com/makeminemilk)

You don't have to tell us that you've been lying awake the past two nights trying to figure out exactly how many seconds it takes center of the music universe Justin Bieber to chug a glass of milk. We know. We know . The good news is that the results of the UK's Make Mine Milk challenge featuring the Bieb are in. Ready to find out how rapidly this guy can swig his moo juice? Then head below.