죽은 게도 동여매고 먹으라 -- Even a dead crab should be tied down before eating.

This proverb reminds to pay special attention before doing anything. (무슨 일이든지 앞뒤를 잘 살펴서 안전하게 행동하라는 말.)

[edit] See also

• 죽다: to die
• 게: a crab
• 동여매다 to bind
• 먹다: to eat