Posted this one a couple of hours early so you have some time to prepare this morning! As stolen (verbatim) from SickHop:

Cereal with surprising or disgusting milk
What you’ll need:
Food coloring ~~ Cereal ~~Milk
Take out the cereal bowls and before pouring in everyone’s favorite cereal add a few drops of food color. You can choose their favorite colors or go with whatever color will gross them out such as green. Then simply pre-pour the kids cereal and leave the milk on the table for them to add themselves.
When they add the milk, it will mix with the food coloring and turn the milk that color. This is obviously more effective with cereals such as cheerios than with multi-colored fruit loops.

Lotsa larfs!

Photo from the Martin Short masterpiece Clifford.

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