Pranks & Gags
Turn a half full bottle of ketchup upside down to allow ketchup to run to the top.Turn the bottle right-side-up and put 2 spoonfuls of baking soda in it. Screw cap back on. Allow for ketchup to run down the sides (to cover the baking soda).
Unknown - Source of both the Trick Description and Trick Image are unknown
Is this trick using work of your own without attribution? Click here to PM the user
and let them know!