never put off until tomorrow what you can do today
A humorous, self-deprecating proverb that literally means 'the one who says "let's do it tomorrow" is a moron'. Used to chide procrastination in a lighthearted way.
They say 'never put off until tomorrow what you can do today,' but I still end up procrastinating.
When I kept putting off my homework, my mom laughed and said, 'He who says "I'll do it tomorrow" is a moron.'
A modern Japanese proverb combining 明日 (tomorrow), the volitional form やろう (let's do), the topic particle は, and 馬鹿野郎 (moron). The exact origin is uncertain, but it likely emerged as a catchy, humorous way to discourage procrastination.