skewering food with a chopstick to pick it up (a breach of etiquette)
Refers to the impolite act of stabbing food with a single chopstick instead of picking it up properly. Often listed among other chopstick taboos like 迷い箸 or 渡し箸.
Skewering food with a chopstick is considered a breach of etiquette in Japan.
Compound of 刺し (sashi, 'stabbing', from 刺す) and 箸 (hashi, 'chopstick'), with rendaku voicing to ばし.