For me, it would have to be 3 day old, warm, stale chocolate milk. I almost exploded because of bad it tasted. I thought I was going to throw up as soon as it touched my tougue. Yes, I shouldn't have tried to drink it, but chocolate milk is like crack to me, and you all know how much I love crack. 
Post 'em!

Post 'em!
Got a permanent feather in my cap;
Got a stretch to my stride;
a stroll to my step;
Got a stretch to my stride;
a stroll to my step;