What a bummer! (i haven't said that word in ages lol) That stuff is disgusting so do what dm said. Get it nice and cold and hold your nose.
I don't think it would be as bad if you did it on a full stomach but nooooooo They have to starve ya first!
Get some good readin material in the ladies room. you're gonna need it.
Good luck. I'll be thinkin of you (not being in the ladies room of course but in the room where they do the test) you know what I mean