ねぶり箸ばし

noun

licking one's chopsticks

A specific breach of Japanese table manners; considered rude and unhygienic.

• ねぶり箸ばしは、食しょく事じのマナーとして避さけるべき行こう為いだ。

  Licking your chopsticks is an act to avoid as part of dining etiquette.