TEETH ON, CUT (ONE'S)

(informal) gain experience from (something); learn from. Derived from reference to a child whose teeth are just beginning to appear (i.e., beginning to cut through the gums). —SHSBC Binder 12 Approved Glossary

(informal) gain experience from (something); learn from. Derived from reference to a child whose teeth are just beginning to appear (i.e., beginning to cut through the gums).