Shitaki Mushrooms is what you say in place of the word "shit". It often keeps you from getting in trouble at school and other places where "cursing" isnt neccesarily accepted!
The word you say as a fall back in case of a teacher, parent, or superior overhearing you say the word 'shit'.
Also popularly followed by the word 'mushrooms' or 'shrooms' for a little laugh.
(Shitaki usage)
Person2 shows person1 a video of a huge explosion made from a TV.
*A superior walks by*
Person1: oh SHIT!
*Superior overhears the word 'shit' from person1.*
Persion1: -taki mushrooms are so good with rice.
*Superior walks away with a grin*
Person2: Dude, you almost got boned.