馊主意

bù yào chū sōu zhǔ yi

不要出馊主意！

Stop making stupid suggestions!

chū gè sōu zhǔ yi

出个馊主意

give somebody a bum advice

duō kuī le nǐ de sōu zhǔ yi hài de wǒ men pǎo le bù shǎo yuān wang lù

多亏了你的馊主意，害得我们跑了不少冤枉路。

Thanks to your rotten idea, we went the long way.

zhè dà gài shì gè sōu zhǔ yi dàn guǎn tā ne

这大概是个馊主意，但管它呢！

This is probably a bad idea, but what the hey!