pain in the butt
Noun
Meaning
pain in the butt (plural pains in the butt)
(Canada, US, informal) A nuisance; a source of trouble or annoyance.
The customers love it, but the employees think the new system is a pain in the butt.
Synonyms
nuisance
headache
pain in the neck
nudnik
pain in the ass
nudnick
aggro
pain in the arse
pain in the bum
pain in the back
pain in the rear