a thorn in side

a thorn in somebody's/something's side

also a thorn in the side of somebody/something

someone or something that continually causes problems Most teachers usually have one student in their class who is a thorn in their side. The town finds the casino a thorn in its side, even though it brings huge numbers of tourists to the town. Health inspectors are a thorn in the side of most restaurant owners.

Common Names:

Name	Pronounced	Usage
Kaety	KAY-tee	English (Rare)
Lyudmila	lyood-MEE-lah (Russian)	Russian, Bulgarian, Medieval Slavic
Chiyoko	chee-yo-ko	Japanese
Klasina	klah-SEE-nah	Dutch
Doreen	DAWR-een	English
Dagrun	-	Norwegian