1. Combining masturbation and prayer, most commonly in the form of praying you don't get caughtwhacking off in a compromising position.
2. Worshiping God by joyously making use of the self-pleasuring equipment with which thou hast been blessed.
So this one time I was doing some serious masterpraytion over cousin Sophie's bikini photos on Facebook, cause God help me if I get caught whacking off to that.
A term first coined by Dr Gregory House in season 6 episode 13 to denote the feigning of a practical joke on oneself to avert suspicion from other people about one's guilt as a prankster.
Wilson:You created empirical proof that I didn't prank you selling me on the notion that you didn't prank. Maybe you self-pranked.
The act of pulling a prank on one's self in order to cast off suspicion from an earlier prank. A tactic often used when one is preparing for the ultimate prank in a series that will produce great personal enjoyment at the expense of others.
After the warranted egging of his neighbors' homes and masterpranking his own house (less than the others of course) Sanchez began planning for the imminent round of flaming bags of dog poop.
That thing that happens to people when they hear a new Drake song on the radio or speakers that they memorized within 15 minutes of the song's release, and all of the sudden stop, dance and sing along to Drake in order to look super cool. Particularly in the Toronto area, this is extremely prevalent.