The sound made by pressing the tounge against the front of the roof of your mouth, applying pressure, and releasing. This is normally used in times of frustration or disatisfation.
(Obviously this last example is a case of exaggeration, it is an impossibility for anyone to possess less morals than TCH)
By Molli
TCH
TCH (noun) stands for "Trump Cock Holster". It's a person that defends Trump even when all the demonstrable facts point to Trump screwing them. A TCH is someone that goes out to the grocery store during a pandemic without any PPE because Trump wants them to liberate themselves from the bondage of government suppression of social distancing.