子供 こども3歳 さんさいまでに一生分 いっしょうぶん親孝行 おやこうこうをする
kodomowa sansaimadeni i' shōbunno oyakōkōo suru

Expression

1. children pay back their debt to their parents in full by age 3 (through their cuteness)

Proverb
Other forms: