吃烧饼

Traditional (Taiwan): 吃燒餅

chīshāobing ㄔ ㄕㄠ ˙ㄅㄧㄥ

    • to score zero in an exam or game

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
eat a sesame flatbread
Meaning
Given by the book as a less usual form of 吃鸭蛋: to score zero in an exam or game, since the round flatbread looks like a zero.

Sources