A fancier way of saying "suck my dick". Used in occasions when you may not want the person to comprehend precisely what you mean. Usually accompanied with the word "sir", such as:
To overcome obstacles and excel with finesse at any given task due to an individual’s brute will power. 💪🏽 often at the expense of lost sleep, occasionally lost friendships, and less free time.
They think they can hold Mike back in Calculus, but I promise you, he gon apply pressure.
By Livvy
MRD Applies
While giving evidence at the trial of Stephen Ward, Rice-Davies made the quip for which she is most remembered. When the prosecuting counsel pointed out that Lord Astor denied having an affair or having even met her, she replied, "Well, he would, wouldn't he?" (from Wikipedia).
Hence, "MRD applies" means "he would say that, wouldn't he". Usually used to devalue an opinion by drawing attention to the other-than-impartial situation of the person voicing it.
I think this is a silly idea, myself, but then, I’m a state regulator, so MRD applies.