just searched " i am insane " on the internet japanese dictionary that i found last time and one of the results shocked me like siao.
嵌める(P); 填める(oK) 【はめる】 (v1,vt) (1) (uk) to insert; to put in (such that there is a snug fit); (2) (col) to have sex; to fuck; (3) to pigeonhole (into a particular category); (4) to place a ring-shaped object around something (esp. one that restricts freedom, such as handcuffs); (5) to entrap; to set someone up (i.e. frame them for a crime, etc.); (P)