鱀

既 = 旡 + 艮 : Mnemonic symbol: the saying 一言既出，驷马难追 means "lit. once said, a team of horses cannot unsay it (idiom); a promise must be kept". Thus, I'll represent this character with a team of four horses.

Joan of Arc made a bet with a team of four horses that she'd be able to chew 20 chewing gums at once. After stuffing ten of them into her mouth she's already chocking, but what has been said cannot be retracted by a team of four horses.

鱼 = ⺈ + 田 + 一 : Yu the Great set up a small rice field just inside the entrance of the space station, and there are some fish swimming in the rice field. The space station's crane spotted them and wants to snap one out of the rice field, but just as he was about to snatch one of them, Yu the Great hit him with a flute.