Be a bed of nails British phrase UK informal
To be painful, difficult, or unpleasant.
Living with strangers in a shared apartment is a bed of nails.
Eating out with Leo is a bed of nails. He is so talkative that I can't get a word in edgeways.
Her brother's care has been a bed of nails for her all these years.
It is difficult for someone (not) to do something.
To be put in a bad mood
Used to refer to an unpleasant, repellent place, thing or person
The verb "be" should be conjugated according to its tense.
To do domething based on your emotions rather than for rational reasons
I can't believe that Tom beat his classmate. He's always the one who let his heart rule his head.