when in doubt, do nowt

Etymology
is a dialectal form of, used here for the rhyme.

Proverb

 * 1) When faced with a difficult decision, it is better not to take unnecessary risks.

Translations

 * Finnish: jos et tiedä, mitä teet, älä tee mitään
 * French: dans le doute, abstiens-toi
 * Italian: nel dubbio astieniti
 * Polish: nie ryzykuj niepotrzebnie