When a person, usually your spouse or in-law, tries to pin you down to a certain time even though they know certain aspects are out of your control and they are pretty aware you will be not arriving when they want you to.
After the question is posed in several ways, the offender usually succumbs and blurts out a time they know will make the spouse happy but is totally implausible, thus hanging themselves
based on the time
they were coerced
Wife: So what time will you be home tonight?
Husband: I am not sure because of this 5pm meeting today and the usual traffic.
Wife: Usually you are home at 5:45, so maybe you will be here like 5:50?
Husband: When I get home at 5:45 I do not have 5pm meetings on those days so it is hard to say
Wife: How long is your meeting
Husband: I'm not running it so I am not sure
Wife: Traffic shouldn't be too bad since it's friday so you can probably get here by 6pm I would think, don't you?
Husband: yeah sure 6pm
The husband was effectively put in a clock-noose