Coke + Milk = :puke:

[Solid Snake]

Reaction : Phosphoric Acid contained in the coca cola to the milk.
"Phosphoric Acid molecules attach to the milk giving them more density and separate out while the remaining liquid that makes up the milk and cocoa cola now being lighter floats on top. The solid matter is basically milk that has been curdled by the addition of the more acidic soda."

 

[Just Kevin]

Sounds delicious! Sign me up!

 

[ShaRpY HaRdY]

Nice now I know to do that at work to simulate puking so I can get out early every so often.

 

[Dolph'sZiggler]

how do root beer floats work then? isn't ice cream mainly milk

 

[Just Kevin]

how do root beer floats work then? isn't ice cream mainly milk

You immediately consume root beer floats as is their purpose, to be consumed. If they were left sit out they would do the same.