◆女房百日、馬二十日 Nyoubou 100nichi uma hatsuka(20ka).
- 解釈：何でも新しいうちは珍しいが、直に飽きるものだというたとえ。
- Literal：The wife is 100 days, the horse is 20 days.
- Interpretation：Anything, while it is new, it is new, but it gets bored soon.
- 類義：馬牛三十日（みそか）、嚊（かか）二十日。兄弟二十日、孫二十日。嫁の三日褒め（ぼめ）。