BAD IDEA
Can I mix Mentos with Coca-Cola?
Sure, but expect a geyser that demolishes your dignity, and probably your shirt too.
Mixing Mentos with Coca-Cola triggers a rapid carbon dioxide release that creates an impressive soda geyser. It's a popular experiment for laughs or science demos, but doing it indoors or in your nice clothes usually ends badly. So yes, you can mix them, just don't blame gravity or your carpet when chaos ensues.