The equivalent of fatality in mortal combat, used in a past tense reference. Often yelled out randomly when someone else fails at something. Also used to make a very bad moment comical.
Person:Dang, I got an F, SHINIMASHITA!!!


Person:Yo, I just tripped and fell on my face on my way to work

Random Person on the sidewalk:SHINIMASHITA!

Person: no

Random Person on the sidewalk:SHINIMASHITA!!!!!!!

Person : da fak!
by Zikhali December 1, 2012