One who explores another person's anus, with fingers, penis, or other instrument with such enthusiasm as if they were rummaging around for something in there. Also used as a playful insult of a friend, like calling them a penile perpetrator, fgt, or scrotum soldier.
"STFU you rectal rummager! I heard bout what you did to that other guy when you were drunk at the party, you fgt!"
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
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).