When something is done really manly and shweet, or looks as though it is fit for the use of either a pirate or pir4te. Predominantly used in a complimentary fashion, though can be used insultingly if affiliated with a sexual reference.
Someone who specializes on collecting stamps of all shapes and sizes featuring the number pi on them, be it as a number, symbol, or word in any languages—with or without other numbers or symbols.
Prof. Frump told his audience that they’d call him a pilatelist, not a philatelist.
Positioning your face underneath a glass table and asking your boyfriend or girlfriendto shit on top of the table. This gives you full view without having to take your shirt to the laundry.