[破釜沉舟, pò fǔ chén zhōuㄆㄛˋ ㄈㄨˇ ㄔㄣˊ ㄓㄡ] lit. to break the cauldrons and sink the boats (成语 saw); fig. to cut off one's means of retreat; to burn one's boats#46417
[かまをほる, kamawohoru] (exp, v5r) (1) (uk) (col) (vulg) (See お釜を掘る・1) to perform anal sex; to bugger; to sodomize; to sodomise; (2) to crash one's car into the back of another