4 added 191 characters in body
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Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own nest/backyardbackyard/where one eats/sleeps Oxford Reference

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own nest/backyard/where one eats/sleeps Oxford Reference

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own nest/backyard/where one eats/sleeps Oxford Reference

3 added 5 characters in body
source | link

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own backyardnest/backyard/where one eats/sleeps Oxford Reference

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own backyard/where one eats/sleeps Oxford Reference

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own nest/backyard/where one eats/sleeps Oxford Reference

2 added 152 characters in body
source | link

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own backyard/where one eats/sleeps Oxford Reference

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own backyard/where one eats/sleeps

Consider,

foul one's own nest

Fig. to harm one's own interests; to bring disadvantage upon oneself. (Alludes to a bird excreting into its own nest.) FOD

Sort of in the same vein but a lot more vulgar, crap/shit in one's own backyard/where one eats/sleeps Oxford Reference

1
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