狗肉上不得席

狗肉上不得席

Literally means:

dog meat doesn't deserve to appear in a feast as a dish

Actually means:

be unqualified enough for something

席, a feast. This phrase means dog meat cannot be served in a feast.

It figuratively means one is not qualified for a certain job, or one is not able to win any credit thus he does not deserve any support or help. Derogatory.

席，整桌的酒菜。狗肉上不得席，狗肉不可以放在酒席上。

比喻某人素质不行，资格不够，上不了场面，或不争气，不值得抬举或扶持。含有贬义色彩。