Noun; When a male inserts his finger (preferably the index or middle finger) into his female partner's ass while performing intercourse on her. For best results the female should be on top and the finger should be worked into the ass slowly and comfortably, once inside, the finger should be pressed against the cervex and wiggled.

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

When a man inserts his finger in the ass of his partner while performing intercourse on her. Most effective when she is on top.