When someone conspicuously wears a π tattoo to publicly show their undeniable or unquestionable love for the irrational number.
Just because some gangsters have a pittoo on their forehead is no proof that they actually love the world’s most disliked school subject—on the contrary, it’d be very likely that they hate the symbol so much that they decided to wear it out of rebellion.
It is simply the study of pits. Of course, a pitlologist must pick a field to specialize in (e.g., watermelon pits, BBQ pits, or the study of pitiful situations and puns).
When I grow up I want to study pitology since I'm so good at falling into them. I'm going to study pits in the Amazon, Aztec ruins, ancient Buddhist temples, and various tombs in Egypt and India.