When you tell someone the truth, but its a misleading truth because the truth is about to change soon, or you mean to change the course of events so the truth becomes false.
When you tell your ex-girl friend that "your not dating this new girl," but you have every intention in trying to get together with this girl and start dating her. That's called the black truth.
by Ramafer September 09, 2012
Telling a fat girl the reason the guy doesn't like her is that she's fat so you can enjoy seeing her suffer is a black truth.
by HIhihihi3211123 June 11, 2017