FSM is the Flying Spaghetti Monster, an imaginary but not capable of being dis proven mythical figure that is as likely to be real as “God”.
IPU is the Invisible Pink Unicorn, an older imaginary but not capable of being dis proven mythical figure that is as likely to be real as “God”.
The FSM has a high absurdity factor and the IPU has the wonderful conundrum of how do we know she is pink if she is invisible.
Jim