be cutting (one's) own throat

be cutting (one's) own throat

To be causing problems for oneself with one's own actions (which are often motivated by anger). I know you're mad at me, but I really think you're cutting your own throat here—running away is only going to make your life harder.
See also: cutting, own, throat

be cutting your own throat

If someone is cutting their own throat, they are doing something which will damage them or make them fail. I think the union is cutting its own throat because if they go on strike, there will be even more jobs lost. Note: The verb slit is sometimes used instead of cut. They are slitting their own throats by putting their prices up.
See also: cutting, own, throat