anacronym, stands for:
Two In The Pink, One In The Stink

Definition:
To insert your forefinger and middle finger into the vagina, while curling back the ring finger onto your palm and then sneaking your pinky finger in her dirtbox

When you eat dirt for the first time and leave your family to build a shack in the woods

See also: Shocker The term "shocker" spurred the comic Didgit n' Boo penned by Brian Murphy.