Hahaha.. my worst thing to puke so far is Beef Rendang with rice. It was quite dry so the puke was very lumpy, when it reaches my mouth it didn't just fall out, it SLID down my tongue, yuck! Even now the thought of beef rendang makes me want to puke!
Best things to puke? Watermelon, yoghurt, prune juice. Anything liquidy really, hurls straight from the throat into the toilet bowl.