On this page of the trophy/achievement guide to Star Wars Jedi: Fallen Order, you will find detailed information on how to unlock Cal Got Your Tongue? trophy/achievement. You get this trophy/achievement by slicing Oggdo's tongue.
Oggdo are the big toads encountered while exploring Bogano. One of them can be found in the Great Divide location. Unfortunately, you can't get this trophy/achievement in the first chapter.
This trophy/achievement requires some preparation. You must make your way to chapter 3 and visit the Tomb of Miktrull to unlock Force Pull.
That's not all. You need to purchase Grasping Pull skill which increases the effectiveness of Force Pull.
Start the fight and don't attack the toad. Wait for Oggdo to use its red attack - the toad will attack you with its tongue. This monster has several red attacks so you need to wait for the right one.
Hold down the Force Pull button (L2 / left trigger on the gamepad) to grab the tongue (picture 1) and slice it with a standard lightsaber attack (Square / X on the gamepad) (picture 2).
Don't attack the tongue right away (e.g. after using Force Slow) - this won't work. The only way to get this trophy/achievement is to use Grasping Pull.