make one's bed and lie in it (literally: now that you've cooked some gruel for yourself, slurp it)
cmn吃後悔藥 /吃后悔药
hak自家屙屎自家食
Etimoloji
Chosen for the rhyme. Pecho literally means “chest”, but figuratively “valor, strength, fortitude”, and as a conjugating form of pechar it also means “I put up with, I deal with”. This phrase can therefore be interpreted as “to the done [thing], fortitude”, “with what's done, I deal/put up”, or less literally, “I shall deal with what's done”.