This is the secret department in the Ministry of Magic. It holds things such as prophecys. One of Harry Potter's battles is fought here.
by ARandomGirl,HarryPotterLover April 3, 2015

The process when you're practicing a skill relentlessly but continuously fail to master it, but when trying again after a certain number of days, the skill comes naturally>
Zoe simply could not understand how she was able to play the piece correctly. The night before, her pathetic attempts to master bars 57 -79 held no results no matter how she practiced it, Today, however, she was able to perfectly play the piece on her first attempt. It seems that her playing skills had undergone a mystery marination overnight.
by Chamber August 1, 2018

by Why is this not a word yet? January 11, 2016

Musical duo comprised of Ricci Lahn and Zach Butler with mind blowing guitar sounds and unequaled sex appeal.
Woman #1: Oh my God girl, did you see Mysterious Clitoris last night at the bar?
Woman #2: Yes I did! Girl, my panties are still wet.
Woman #2: Yes I did! Girl, my panties are still wet.
by Reltubhcaz1977 June 23, 2020

by NAGS October 31, 2013

Mysterious brown: something brown on your skin or clothing that could be chocolate from a previously eaten snack or it could be dirt, or it could be shit. You can't be sure that it is chocolate or you could lick it off, so you have to clean it.
Oh no, I just ate a kit kat bar and then pet the dog and now I found something brown on my arm. That is some mysterious brown. I'd better wash it off with soap and water.
by DebbyHM December 9, 2018

by Holiday Guy December 19, 2019
