Crum up phrasal verb slang
To spoil or ruin something; to mess something up
He completely crummed up the interview.
The bad weather cummed up our plan.
I added too much salt to the sauce and crummed it up.
My niece crummed my room up with her toys.
To interfere somebosy's plan or bussiness
To disrupt someone's plan.
Spoil or undermine someone's plans or chances
To spoil something with something else
A terrible disaster or a catastrophe
The verb "crum" must be conjugated according to its tense.
The origin of this phrase is not clear.
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.