foul your own nest

foul (one's) own nest

To do something that causes problems for oneself. I'm pretty sure I fouled my own nest when I accidentally insulted the boss's daughter at the holiday party.
See also: foul, nest, own

foul one's (own) nest

To do something that creates problems for oneself. I wouldn't talk to the boss while you're angry—you'll just end up fouling your own nest.
See also: foul, nest
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

foul your own nest

LITERARY
If someone fouls their own nest, they do something which harms themselves and damages their chances of success. Man has invented a hundred ways of fouling his own nest — the grime, the pollution, the heat, the poisons in the air, the metals in the water.
See also: foul, nest, own
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

foul your own nest

do something damaging or harmful to yourself or your own interests.
The proverb it's an ill bird that fouls its own nest , used of a person who criticizes or abuses their own country or family, has been found in English since the early 15th century.
See also: foul, nest, own
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
There is a saying: Don't foul your own nest. If it doesn't work out, you are stuck having to deal with each other on a daily basis.
"If you wish to foul your own nest, all well and good, but please refrain in future from fouling mine."