The first to come to mind....octopus and orange juice.
Edit: some of you guys are just damn cringeworthy.
How about....ice cold milk and warm saurkraut
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Edited by Kirby235711: 3/16/2016 9:15:14 PMToothpaste and orange juice. Toothpaste has sodium lauryl sulfate, a compound that makes it get bubbly when you brush. SLS suppresses the tongue's sweet receptors and destroys phospholipids, compounds that inhibit bitter receptors.