When you buy a set of electric toy trains and you tie your baby to the tracks naked with its legs spread and you tape a drill with an eggplant on the front of it going full speed and it hits the babies insides so deliciously that it’s ancestors can feel it.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).