Fold like a cheap suitcase verb phrase
Be easy to collapse or fail; submit to defeat easily
The rival team's defense is very weak as the best player has been eliminated. They will fold like a cheap suitcase soon.
To quit; to give up, stop doing something because you know that you cannot succeed; admit defeat
a joke, idea, or suggestion falls flat, meaning that it does not achieve the intended effect.
To fall suddenly and heavily to the ground
To begin to decline or deteriorate decline; to get worse very quickly
The verb "fold" should be conjugated according to its tense.
The phrase comes from the situation of cheap, uncertain luggage that is easily damaged by baggage handlers or hotel porters.
If you swallow the bait, you take something that someone offers you, or agree to do something that someone asks you to do without knowing that it is a trick or way of getting something from you.
You can't just do whatever he wants you to do. Don't swallow the bait.