pet peeve

(noun) something that really annoys someone

Example Sentences:

A: What’s your pet peeve?
B: My pet peeve is people who smoke in restaurants. They ruin the taste of the food and harm people’s health. I HATE smokers! You?
A: People who complain a lot.

The teacher’s pet peeve is people who are always late, so you should be on time.

Media:

CNN – Pet Peeve

….It’s a big pet peeve….