When a person, place, or situation is both depressing and arousing. Usually fits when a person is lonelyaf, AKA having the best sexual experience in his life attributed to his WAIFU body pillow.
Guy 1: Hey man, this flashlight I bought on Amazon was FUCKING amazing! You should totally get it!
Guy 2: Man, that shit’s DEPROUSING. Unlike you, I actually taste the real poontown with my dingerwenus.
When you're public speaking and swallow wrong causing you to cough uncontrollably. Also any other uncontrolable body issue when public speaking causing impromptu pause.
My friend was giving a speech in front of thr class and had a Derious. He could not stop coughing!