自食其言: go back on one's own words; break one's promise; fail to keep one's promise; fail to live up to one's promise; retract one's promise; turn back on what one has said
不得前后: defficulty in urination and defecationdifficulty in urination and defecationdysuria and constipationdysuria and dyschezianothing per urethra and anusurination and defecation disorder