When you push the head of you penis back into the shaftrolling it in. Then you tuck your rolled dick into your ballsack so that it looks like you have three balls.
We were getting changed when I looked over and sawMike was triceratopsing.
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).